Nursing Officer 2026 MCQs: Preparing for competitive examinations like AIIMS NORCET, RRB, ESIC, State PSC, and NCLEX requires a deep command of clinical pathophysiology and nursing interventions. This comprehensive practice set of 100 Medical-Surgical Nursing MCQs is aligned with the latest Nursing Officer 2026 examination pattern. Master these evidence-based questions and clinical rationales to evaluate your speed, diagnostic precision, and bedside decision-making skills.
Before diving into clinical cases, ensure your foundations are rock solid by reviewing our Anatomy and Physiology MCQ Practice Set and our quick-revision Pharmacology Drug Calculation Quiz.
Cardiovascular System Disorders
Coronary Artery Disease & Myocardial Infarction
1. A 58-year-old male presents to the triage unit reporting crushing substernal chest pain radiating to his left arm. The 12-lead ECG confirms an acute STEMI. Which serum cardiac biomarker rises first following myocardial cell necrosis?
A) Troponin I
B) Creatine Kinase-MB (CK-MB)
C) Myoglobin
D) Lactate Dehydrogenase (LDH)
Answer: C) Myoglobin
Explanation: Myoglobin is a small heme protein that releases rapidly from damaged muscle tissue, becoming detectable within 1 to 3 hours after injury. While Cardiac Troponins (I and T) remain the diagnostic gold standard due to absolute cardiac specificity, they elevate later (3 to 6 hours). CK-MB elevates around 4 to 6 hours, while LDH is a late marker that peaks after 48 to 72 hours.
2. A patient recovering from acute myocardial infarction develops sudden hypotension, muffled heart tones, and marked jugular venous distention. What life-threatening complication should the nursing officer suspect?
A) Acute ventricular septal rupture
B) Cardiac tamponade
C) Pulmonary embolism
D) Acute aortic regurgitation
Answer: B) Cardiac tamponade
Explanation: The classic combination of hypotension, distended neck veins, and muffled heart sounds constitutes Beck's triad, pathognomonic for cardiac tamponade. Ventricular septal rupture presents with a harsh holosystolic murmur at the left sternal border. Pulmonary embolism features clear lungs and pleuritic pain, while aortic regurgitation exhibits a wide pulse pressure and blowing diastolic murmur.
3. Which clinical intervention takes priority when administering intravenous Nitroglycerin to a patient with acute coronary syndrome?
A) Continuous pulse oximetry monitoring
B) Serial continuous blood pressure monitoring
C) Hourly urine output checks
D) Daily body weight measurements
Answer: B) Serial continuous blood pressure monitoring
Explanation: Nitroglycerin acts predominantly as a direct venodilator, reducing preload and systemic vascular resistance, which carries a high risk of precipitous hypotension and reflex tachycardia. Oxygen saturation, urine output, and weight are essential baseline parameters, but systemic blood pressure titration dictates the safety and flow rate of intravenous nitrate infusions.
4. A patient with non-valvular atrial fibrillation is scheduled for electrical cardioversion. Which diagnostic procedure must be performed prior to shock delivery to prevent an embolic stroke?
A) Transthoracic echocardiogram (TTE)
B) Transesophageal echocardiogram (TEE)
C) Cardiac magnetic resonance imaging
D) 24-hour Holter monitoring
Answer: B) Transesophageal echocardiogram (TEE)
Explanation: Transesophageal echocardiography visualizes the left atrial appendage with high acoustic resolution to definitively rule out mural thrombi before cardioversion restores normal sinus rhythm. TTE cannot reliably visualize small left atrial appendage thrombi. Cardiac MRI and Holter monitoring evaluate structural disease and arrhythmia patterns, but cannot safely clear a patient for immediate emergency cardioversion.
5. What is the fundamental hemodynamic objective of an Intra-Aortic Balloon Pump (IABP) deployed in cardiogenic shock?
A) Increases cardiac afterload and decreases coronary perfusion
B) Augments coronary artery perfusion during diastole and decreases afterload during systole
C) Elevates systemic vascular resistance to increase mean arterial pressure
D) Replaces active ventricular systolic output completely
Answer: B) Augments coronary artery perfusion during diastole and decreases afterload during systole
Explanation: The IABP balloon inflates at the onset of diastole (dicrotic notch), pushing blood retrograde into the aortic root to enhance coronary blood flow, and deflates immediately prior to ventricular systole to create a vacuum that reduces left ventricular afterload. It does not complete ventricular work like an LVAD, nor does it elevate systemic afterload, which would worsen myocardial ischemia.
Heart Failure & Valvular Pathology
6. A patient admitted with acute decompensated left ventricular heart failure exhibits dyspnea, orthopnea, and coarse bilateral crackles. Which physiological mechanism directly causes these manifestations?
A) Elevated systemic venous hydrostatic pressure
B) Pulmonary capillary hydrostatic pressure exceeding plasma oncotic pressure
C) Increased pulmonary interstitial lymphatic reabsorption
D) Decreased pulmonary vascular permeability
Answer: B) Pulmonary capillary hydrostatic pressure exceeding plasma oncotic pressure
Explanation: Left ventricular contractile failure causes backup of blood into the left atrium and pulmonary veins, driving pulmonary capillary hydrostatic pressure above normal oncotic forces (25 mmHg) and causing fluid transudation into alveoli. Systemic venous pressure elevation characterizes right-sided heart failure. Lymphatic drainage is overwhelmed rather than elevated, and microvascular permeability remains unchanged in pure cardiogenic hydrostatic pulmonary edema.
7. A client with chronic heart failure has a serum potassium level of 3.0 mEq/L and is prescribed Digoxin 0.125 mg daily. For which adverse clinical effect is this client at greatest risk?
A) Subtherapeutic digoxin serum levels
B) Severe Digoxin toxicity and lethal cardiac dysrhythmias
C) Hyperacute pulmonary edema
D) Acute tubular necrosis
Answer: B) Severe Digoxin toxicity and lethal cardiac dysrhythmias
Explanation: Digoxin competes with potassium ions for binding sites on the cardiac cell membrane Na+/K+ ATPase pump. In hypokalemia, more uninhibited receptors are exposed to Digoxin, enhancing its myocardial effect and precipitating fatal ventricular dysrhythmias even at therapeutic drug concentrations. Low potassium enhances rather than reduces toxicity, without directly causing pulmonary edema or tubular necrosis.
8. During cardiac auscultation of an 82-year-old female, the nurse identifies a harsh, crescendo-decrescendo systolic ejection murmur loudest at the second right intercostal space, radiating directly to the carotids. This finding signifies:
A) Mitral valve regurgitation
B) Aortic valve stenosis
C) Tricuspid valve stenosis
D) Pulmonary valve regurgitation
Answer: B) Aortic valve stenosis
Explanation: Aortic stenosis classically causes a harsh crescendo-decrescendo systolic murmur at the right upper sternal border that radiates upward toward the carotid arteries due to turbulent blood ejection through a calcified, narrowed orifice. Mitral regurgitation creates a blowing holosystolic murmur at the apex radiating to the axilla. Tricuspid and pulmonary murmurs localize to the left sternal border and vary with inspiration.
9. A client diagnosed with infective endocarditis develops splinter hemorrhages beneath the nail beds, red painful nodules on the finger pads, and nontender maculae on the palms. These palmar lesions are known as:
A) Osler's nodes
B) Janeway lesions
C) Roth's spots
D) Heberden's nodes
Answer: B) Janeway lesions
Explanation: Janeway lesions are flat, nontender, erythematous macules located on the palms and soles caused by septic microemboli. Osler's nodes are tender, painful subcutaneous violaceous nodules on the pads of fingers and toes. Roth's spots represent retinal hemorrhages with pale centers, while Heberden's nodes represent osteoarthritic changes at the distal interphalangeal joints.
10. Which discharge instruction must be emphasized to a patient who has undergone mechanical mitral valve replacement?
A) Maintain a strict high-vitamin K diet
B) Lifelong adherence to oral anticoagulation and routine INR monitoring
C) Discontinue prophylactic antibiotics before dental appointments after 6 months
D) Rely on Aspirin monotherapy instead of Warfarin
Answer: B) Lifelong adherence to oral anticoagulation and routine INR monitoring
Explanation: Mechanical prosthetic heart valves carry a life-long thrombogenic risk and require permanent oral anticoagulation (Warfarin) titrated to a therapeutic target INR (typically 2.5 to 3.5 for mitral valves). High vitamin K diets interfere with warfarin efficacy and must be kept consistent rather than elevated. Prophylactic antibiotic coverage for invasive dental work remains permanent, and antiplatelet monotherapy is inadequate against mechanical valve thrombosis.
Respiratory System Disorders
Airway & Parenchymal Pathologies
11. A 64-year-old male with severe chronic obstructive pulmonary disease (COPD) is admitted with acute hypoxemic respiratory failure. Why should oxygen therapy be titrated cautiously using a low-flow Venturi mask?
A) Excessive oxygen causes acute absorption atelectasis and hypercapnic drive suppression
B) High oxygen concentrations destroy alveolar surfactant proteins
C) Supplemental oxygen directly induces severe bronchospasm
D) It decreases carbon dioxide production within metabolic tissues
Answer: A) Excessive oxygen causes acute absorption atelectasis and hypercapnic drive suppression
Explanation: In end-stage chronic hypercapnia, the central respiratory center desensitizes to elevated PaCO2, leaving hypoxemia as a secondary respiratory stimulus. Administering unregulated high-flow oxygen blunts this hypoxic ventilatory drive, increases dead-space ventilation via loss of hypoxic vasoconstriction (Haldane effect), and triggers worsening respiratory acidosis. It does not trigger direct bronchospasm or reduce systemic carbon dioxide production.
12. An arterial blood gas (ABG) sample yields: pH 7.28, PaCO2 56 mmHg, HCO3- 25 mEq/L, and PaO2 68 mmHg. How should the nurse interpret this acid-base profile?
A) Fully compensated metabolic acidosis
B) Uncompensated respiratory acidosis with hypoxemia
C) Partially compensated respiratory alkalosis
D) Mixed metabolic and respiratory acidosis
Answer: B) Uncompensated respiratory acidosis with hypoxemia
Explanation: A pH of 7.28 is acidemic (normal 7.35–7.45). The PaCO2 is elevated at 56 mmHg (normal 35–45), which accounts for the acidosis (respiratory origin). Because the HCO3- remains within the normal reference range (22–26 mEq/L), renal compensation has not yet occurred, confirming uncompensated acute respiratory acidosis with coexisting hypoxemia (PaO2 < 80 mmHg).
13. Which bedside emergency intervention is most critical for a client experiencing an acute life-threatening asthma exacerbation (status asthmaticus) unresponsive to inhaled beta-2 agonists?
A) Immediate intravenous administration of systemic corticosteroids and Magnesium Sulfate
B) Inhaled long-acting beta agonists (LABA)
C) High-dose oral antihistamines
D) Chest physiotherapy and postural drainage
Answer: A) Immediate intravenous administration of systemic corticosteroids and Magnesium Sulfate
Explanation: Intravenous corticosteroids decrease systemic airway inflammation and mucosal edema, while IV Magnesium Sulfate induces bronchial smooth muscle relaxation by blocking calcium channels in refractory severe bronchospasm. LABAs (e.g., salmeterol) have a slow onset and are contraindicated in emergencies. Antihistamines do not relieve bronchoconstriction, and vigorous chest physiotherapy exacerbates airway irritability and work of breathing.
14. A postoperative client suddenly develops tachypnea, acute pleuritic chest pain, diaphoresis, and hemoptysis. What diagnostic imaging method serves as the definitive reference standard to confirm an acute pulmonary embolism?
A) Portable upright anteroposterior chest radiograph
B) Computed Tomography Pulmonary Angiography (CTPA)
C) Serial peak flow spirometry
D) High-resolution abdominal ultrasonography
Answer: B) Computed Tomography Pulmonary Angiography (CTPA)
Explanation: CTPA provides direct, high-contrast visualization of intraluminal filling defects within the pulmonary arterial vasculature, making it the preferred gold standard diagnostic test. Chest X-rays are usually normal or display non-specific signs (Hampton's hump, Westermark sign). Spirometry is contraindicated in hemodynamically unstable clients, and abdominal ultrasound evaluates peritoneal pathology, not pulmonary emboli.
15. A patient diagnosed with Active Pulmonary Tuberculosis is initiated on standard four-drug DOTS therapy. Which baseline and serial assessment must be documented for a patient prescribed Ethambutol?
A) Audiometry and vestibular caloric testing
B) Visual acuity and red-green color discrimination testing
C) Serum amylase and lipase profiles
D) Thyroid-stimulating hormone (TSH) levels
Answer: B) Visual acuity and red-green color discrimination testing
Explanation: Ethambutol causes dose-dependent retrobulbar optic neuritis, presenting with decreased visual acuity and impaired red-green color discrimination. Audiometric monitoring is indicated for aminoglycosides (Streptomycin). Pancreatic enzymes monitor drugs like didanosine, while ethambutol carries no direct thyroid toxicity.
Pleural Space & Critical Chest Trauma
16. While evaluating a client with a closed three-chamber underwater-seal chest drainage system for a pneumothorax, the nurse notes persistent, vigorous bubbling across the water-seal chamber. This observation indicates:
A) Normal re-expansion of the collapsed lung tissue
B) An active air leak in the pleural space or drainage apparatus
C) Obstruction of the thoracic drainage tubing by a fibrin clot
D) The suction control bottle regulator is set too low
Answer: B) An active air leak in the pleural space or drainage apparatus
Explanation: Intermittent bubbling matching expiration or coughing is expected while air evacuates the pleural space; however, continuous, uninterrupted bubbling in the water-seal chamber signals an active leak within the thoracic cavity or a disconnected tube junction. Complete lung re-expansion manifests as cessation of bubbling and minimal drainage. Clots cause absence of fluid fluctuations (tidaling), while suction levels are regulated in the separate suction chamber.
17. A motor vehicle accident survivor arrives with tracheal deviation to the left, absent breath sounds over the right hemithorax, distended neck veins, and profound hypotension. What is the immediate life-saving intervention?
A) Endotracheal intubation followed by mechanical ventilation
B) Immediate needle thoracostomy at the second intercostal space, midclavicular line
C) Stat infusion of 2 liters of normal saline
D) Emergency pericardiocentesis under fluoroscopic guidance
Answer: B) Immediate needle thoracostomy at the second intercostal space, midclavicular line
Explanation: The patient exhibits clinical hallmarks of right-sided tension pneumothorax with mediastinal shift compressing the vena cava and causing obstructive shock. Immediate needle decompression converts this into an open pneumothorax and relieves cardiopulmonary collapse prior to definitive chest tube placement. Intubating under high positive pressure without decompression will worsen cardiac arrest, and volume resuscitation cannot overcome mechanical vena caval obstruction.
18. What physical examination finding is characteristic of a client who has sustained multiple adjacent rib fractures resulting in flail chest?
A) Crepitus localized exclusively over the sternal angle
B) Paradoxical chest wall movement during the respiratory cycle
C) Bilateral hyperresonance on percussion with prolonged expiration
D) Unilateral bronchial breath sounds at the lung bases
Answer: B) Paradoxical chest wall movement during the respiratory cycle
Explanation: Flail chest occurs when two or more adjacent ribs are fractured in two or more places, creating a detached, floating thoracic segment. This segment moves paradoxically—sucking inward during negative inspiratory pressure and bulging outward during positive expiratory pressure. Crepitus, hyperresonance, and altered breath sounds accompany trauma, but paradoxical motion is the defining sign of flail segments.
19. The PaO2/FiO2 ratio in a patient with Acute Respiratory Distress Syndrome (ARDS) receiving mechanical ventilation is measured at 140 mmHg with PEEP of 10 cmH2O. This classifies the ARDS severity as:
A) Mild ARDS
B) Moderate ARDS
C) Severe ARDS
D) Refractory ARDS
Answer: B) Moderate ARDS
Explanation: Under the Berlin Definition of ARDS, severity is stratified by PaO2/FiO2 with PEEP >= 5 cmH2O: Mild is 200–300 mmHg, Moderate is 100–200 mmHg, and Severe is < 100 mmHg. A ratio of 140 falls squarely within the moderate category. "Refractory" is a descriptive clinical state rather than a formal Berlin diagnostic tier.
20. Which mechanical ventilator adjustment is routinely applied as a lung-protective ventilation strategy in ARDS?
A) High tidal volumes (10–12 mL/kg) to maximize minute ventilation
B) Low tidal volumes (4–8 mL/kg predicted body weight) and permissive hypercapnia
C) Routine zero positive end-expiratory pressure (ZEEP)
D) Maintaining high plateau airway pressures (> 40 cmH2O)
Answer: B) Low tidal volumes (4–8 mL/kg predicted body weight) and permissive hypercapnia
Explanation: The ARDSNet lung-protective protocol utilizes low tidal volumes (4–8 mL/kg of ideal body weight) combined with adequate PEEP to prevent volutrauma and barotrauma, while maintaining end-inspiratory plateau pressure < 30 cmH2O. Mild respiratory acidosis is tolerated (permissive hypercapnia). High tidal volumes and zero PEEP provoke cyclic alveolar collapse and shear injury (atelectrauma).
Neurological System Disorders
Cerebrovascular & Intracranial Crises
21. A 70-year-old female presents to the emergency room with right-sided hemiplegia and expressive aphasia that started 90 minutes ago. What is the priority diagnostic investigation required before initiating recombinant tissue plasminogen activator (rt-PA)?
A) Magnetic resonance angiogram of the cerebral vessels
B) Non-contrast head Computed Tomography (CT) scan
C) Lumbar puncture with cerebrospinal fluid analysis
D) Electroencephalogram (EEG)
Answer: B) Non-contrast head Computed Tomography (CT) scan
Explanation: An emergent non-contrast CT scan of the brain is the primary initial imaging modality to differentiate ischemic stroke from hemorrhagic stroke. Intravenous thrombolysis with rt-PA is indicated exclusively for acute ischemic stroke and is contraindicated in intracranial hemorrhage. MRI takes longer to acquire, lumbar puncture delays treatment and risks herniation, and EEG does not assess vascular occlusions.
22. A patient with a severe traumatic brain injury demonstrates a widening pulse pressure, profound bradycardia, and irregular, bradypneic respirations. This triad of signs reflects:
A) Septic shock decompensation
B) Brainstem compression from critically elevated intracranial pressure (Cushing's triad)
C) Spinal shock below the level of injury
D) Autonomic dysreflexia
Answer: B) Brainstem compression from critically elevated intracranial pressure (Cushing's triad)
Explanation: Cushing's triad (systolic hypertension with widening pulse pressure, bradycardia, and irregular respirations) is a late sign of severe intracranial hypertension and imminent transtentorial or tonsillar herniation causing ischemia to the medullary vasomotor center. Shock presents with tachycardia and hypotension. Autonomic dysreflexia occurs with spinal cord injuries at or above T6, producing severe paroxysmal hypertension, headache, and diaphoresis.
23. Which pharmacological agent is an osmotic diuretic administered intravenously to decrease cerebral edema and reduce intracranial pressure?
A) Furosemide
B) Spironolactone
C) Mannitol 20%
D) Acetazolamide
Answer: C) Mannitol 20%
Explanation: Mannitol is an osmotic diuretic that raises serum osmolality, drawing excess fluid out of the cerebral parenchyma down an osmotic gradient and into the vascular space for renal excretion, thereby lowering intracranial pressure. Furosemide is a loop diuretic that reduces systemic volume secondarily, spironolactone is a potassium-sparing aldosterone antagonist, and acetazolamide reduces aqueous humor formation.
24. In assessing a comatose patient using the Glasgow Coma Scale (GCS), the client opens eyes only to painful stimuli, produces incomprehensible sounds, and shows abnormal decorticate flexion in response to pain. What is the calculated GCS score?
A) 5
B) 7
C) 9
D) 11
Answer: B) 7
Explanation: On the GCS scale: Eye opening to pain = 2; Verbal response with incomprehensible sounds = 2; Motor response with abnormal flexion (decorticate posturing) = 3. Total score = 2 + 2 + 3 = 7. A GCS of 8 or less indicates severe brain injury requiring definitive airway control.
25. What is the fundamental mechanism of action of Levodopa-Carbidopa when treating Parkinson's disease?
A) Enhances degradation of acetylcholine at central muscarinic receptors
B) Levodopa crosses the blood-brain barrier to replenish dopamine, while Carbidopa inhibits peripheral DOPA decarboxylase
C) Stimulates peripheral post-ganglionic adrenergic receptors
D) Directly activates dopamine D2 receptors while blocking GABA synthesis
Answer: B) Levodopa crosses the blood-brain barrier to replenish dopamine, while Carbidopa inhibits peripheral DOPA decarboxylase
Explanation: Dopamine itself cannot cross the blood-brain barrier. Levodopa, its metabolic precursor, readily crosses via neutral amino acid transporters. Carbidopa cannot cross the blood-brain barrier; it inhibits peripheral aromatic L-amino acid decarboxylase, preventing premature systemic conversion of levodopa to dopamine, reducing peripheral adverse effects (nausea, arrhythmias) and boosting central bioavailability.
Neuromuscular & Autoimmune Conditions
26. A 28-year-old female presents with fluctuating ptosis, diplopia, generalized muscle weakness that worsens toward evening, and dysarthria. Which test confirms Myasthenia Gravis?
A) Lumbar puncture demonstrating oligoclonal bands
B) Edrophonium (Tensilon) test showing immediate, transient improvement in muscle strength
C) Serum creatine kinase elevation greater than 5,000 U/L
D) Muscle biopsy displaying dystrophin gene deletion
Answer: B) Edrophonium (Tensilon) test showing immediate, transient improvement in muscle strength
Explanation: Edrophonium is a short-acting acetylcholinesterase inhibitor that rapidly boosts acetylcholine availability at the neuromuscular junction, yielding an immediate temporary resolution of myasthenic weakness. Oligoclonal bands confirm Multiple Sclerosis. Massive CK elevation occurs in muscular dystrophies or rhabdomyolysis, and dystrophin mutations characterize Duchenne muscular dystrophy.
27. A client recovering from an upper respiratory tract infection develops symmetric ascending flaccid paralysis, paresthesia, and absent deep tendon reflexes. The nurse recognizes this as:
A) Amyotrophic Lateral Sclerosis (ALS)
B) Guillain-Barré Syndrome (GBS)
C) Multiple Sclerosis
D) Myasthenia Gravis
Answer: B) Guillain-Barré Syndrome (GBS)
Explanation: Guillain-Barré syndrome is an acute, post-infectious autoimmune polyneuropathy characterized by progressive ascending symmetrical motor weakness, areflexia, and sensory changes that risk respiratory failure if it reaches the diaphragm. ALS involves both upper and lower motor neuron degeneration without sensory loss. Multiple Sclerosis is a central demyelinating disease marked by relapsing-remitting lesions, while Myasthenia Gravis exhibits descending ocular-bulbar weakness.
28. What bedside emergency medication must always be readily available when performing an Edrophonium (Tensilon) test for suspected myasthenia gravis?
A) Naloxone
B) Atropine Sulfate
C) Epinephrine
D) Calcium Gluconate
Answer: B) Atropine Sulfate
Explanation: Edrophonium administration can precipitate severe muscarinic cholinergic crises marked by profound bradycardia, hypotension, excessive bronchial secretions, and bronchospasm. Atropine Sulfate is a specific competitive muscarinic antagonist that counteracts these cholinergic effects immediately. Naloxone reverses opioids, epinephrine treats anaphylaxis, and calcium gluconate treats hyperkalemia and magnesium toxicity.
29. A patient with a T4 complete spinal cord transection complains of a pounding headache, diaphoresis above the lesion, cutaneous flushing, and a blood pressure of 210/110 mmHg. What is the initial nursing action?
A) Place the client supine and elevate the legs
B) Elevate the head of the bed to 90 degrees and assess for bladder distention or a kinked catheter
C) Administer IV push hydralazine before assessing other causes
D) Perform vigorous digital rectal stimulation immediately
Answer: B) Elevate the head of the bed to 90 degrees and assess for bladder distention or a kinked catheter
Explanation: The client is experiencing autonomic dysreflexia, an uninhibited sympathetic discharge triggered by a noxious stimulus below the spinal lesion (most commonly an overdistended bladder or bowel impaction). Sitting the patient upright utilizes orthostatic pooling to lower blood pressure, and relieving bladder distention removes the inciting trigger. Supine positioning worsens intracranial pressure, and rectal stimulation before checking the bladder can trigger further sympathetic discharge.
30. Which clinical manifestation is an early warning sign of worsening neurological status in a patient with a confirmed subarachnoid hemorrhage from a ruptured aneurysm?
A) Unilateral fixed and dilated pupil
B) Subtle changes in level of consciousness or increasing confusion
C) Flexor decorticate posturing
D) Flaccid quadriparesis
Answer: B) Subtle changes in level of consciousness or increasing confusion
Explanation: The level of consciousness (LOC) is the most sensitive and earliest clinical indicator of deteriorating neurological status, cerebral vasospasm, or rebleeding. Fixed dilated pupils, posturing, and flaccidity represent late, advanced stages of brainstem ischemia, structural displacement, or herniation.
Gastrointestinal & Hepatic Disorders
Upper & Lower GI Complications
31. A patient with severe peptic ulcer disease develops sudden-onset, agonizing epigastric pain that rapidly generalizes across the entire abdomen. On palpation, the abdomen is rigid and board-like with rebound tenderness. This signifies:
A) Acute mechanical bowel obstruction
B) Perforation of the gastric or duodenal ulcer with chemical peritonitis
C) Acute biliary colic
D) Toxic megacolon
Answer: B) Perforation of the gastric or duodenal ulcer with chemical peritonitis
Explanation: Sudden, excruciating epigastric pain combined with a board-like, rigid abdominal wall reflects peritonitis secondary to free gastrointestinal perforation and spillage of acidic luminal contents into the peritoneal cavity. Obstruction features cramping pain, distention, and hyperactive high-pitched bowel sounds. Biliary colic localizes to the right upper quadrant, while toxic megacolon is a complication of inflammatory colitis involving colonic dilation.
32. When providing care to a patient who has undergone a Billroth II procedure (gastrojejunostomy), which dietary intervention minimizes the risk of early Dumping Syndrome?
A) Ingesting high-carbohydrate meals with liberal liquids during the meal
B) Consuming small, frequent meals high in protein and fat while avoiding fluids with meals
C) Maintaining a strict low-fat, high-fiber, liquid-only diet
D) Lying in high Fowler's position for 60 minutes immediately following meals
Answer: B) Consuming small, frequent meals high in protein and fat while avoiding fluids with meals
Explanation: Dumping syndrome occurs when hyperosmolar chyme rapidly empties into the jejunum, shifting fluid from the intravascular compartment into the intestinal lumen. Eating small, low-carbohydrate, high-protein, and moderate-fat meals delays gastric transit. Avoiding liquids during meals prevents rapid transit, and resting recumbent after meals slows dumping.
33. A 24-year-old female presents with persistent lower abdominal cramping, tenesmus, and passage of 10 to 15 bloody, mucoid stools per day. Colonoscopy shows continuous, superficial mucosal inflammation extending proximally from the rectum. This disease is:
A) Crohn's Disease
B) Ulcerative Colitis
C) Celiac Disease
D) Diverticulitis
Answer: B) Ulcerative Colitis
Explanation: Ulcerative colitis characteristically presents with diffuse, continuous inflammation restricted to the mucosa and submucosa of the large intestine, starting invariably in the rectum and progressing proximally, accompanied by bloody stools and tenesmus. Crohn's disease causes transmural, discontinuous (skip lesions) inflammation anywhere along the alimentary canal. Celiac disease involves gluten-mediated small bowel villous atrophy, and diverticulitis manifests with focal left-lower-quadrant pain.
34. A patient with severe acute pancreatitis has an ecchymotic bluish discoloration around the umbilicus. The nurse documents this finding as:
A) Turner's sign
B) Cullen's sign
C) Chvostek's sign
D) Rovsing's sign
Answer: B) Cullen's sign
Explanation: Cullen's sign is periumbilical ecchymosis caused by tracking of retroperitoneal blood into the falciform ligament and subcutaneous tissues, signifying acute necrotizing pancreatitis. Grey Turner's sign is ecchymosis of the flanks. Chvostek's sign indicates hypocalcemia, and Rovsing's sign points to acute appendicitis.
35. Which serum laboratory evaluation is the most sensitive and specific biomarker for diagnosing acute pancreatitis?
A) Total serum bilirubin
B) Serum Lipase
C) Serum Amylase
D) Alkaline Phosphatase (ALP)
Answer: B) Serum Lipase
Explanation: Serum lipase stays elevated for 8 to 14 days and is produced primarily by pancreatic acinar cells, conferring higher diagnostic sensitivity and specificity than amylase. Serum amylase elevates rapidly within hours but returns to normal within 48 to 72 hours and can rise in parotitis, renal failure, or bowel ischemia. Bilirubin and ALP reflect biliary tract obstruction rather than primary acinar destruction.
Hepatic, Biliary & Esophageal Conditions
36. A client with decompensated liver cirrhosis exhibits asterixis, fetor hepaticus, and somnolence. What is the therapeutic goal of administering Lactulose to this client?
A) Inhibits bacterial protein synthesis throughout the stomach
B) Acidifies the colonic contents to convert ammonia (NH3) into unabsorbable ammonium (NH4+), facilitating its fecal excretion
C) Directly stimulates hepatic cellular regeneration
D) Decreases portal hypertension by selectively dilating splenic capillaries
Answer: B) Acidifies the colonic contents to convert ammonia (NH3) into unabsorbable ammonium (NH4+), facilitating its fecal excretion
Explanation: Lactulose is metabolized by colonic bacteria into organic acids (lactic and acetic acid), lowering intestinal pH. This acid environment protonates diffusible lipophilic ammonia (NH3) into non-absorbable ammonium ions (NH4+), trapping it in the bowel lumen for evacuation. Lactulose does not regenerate hepatocytes or act directly on portal venous vascular resistance.
37. A patient with advanced cirrhosis and esophageal varices suddenly vomits 600 mL of bright red blood. Which intravenous vasoactive peptide is administered to selectively decrease splanchnic blood flow and control acute variceal bleeding?
A) Furosemide
B) Octreotide
C) Metoprolol
D) Pantoprazole
Answer: B) Octreotide
Explanation: Octreotide is a synthetic somatostatin analog that causes selective splanchnic arteriolar vasoconstriction, thereby reducing portal venous inflow, lowering portal pressure, and curbing active variceal hemorrhage. Furosemide depletes intravascular volume without controlling acute bleeding, metoprolol is used for long-term prophylaxis rather than active hemorrhage, and pantoprazole stabilizes gastric clots without reducing splanchnic pressures.
38. A patient is admitted with acute cholecystitis. During palpation of the right upper quadrant beneath the costal margin, the patient inhales deeply and suddenly halts inspiration due to severe sharp pain. This is documented as:
A) Murphy's sign
B) Kehr's sign
C) Blumberg's sign
D) McBurney's sign
Answer: A) Murphy's sign
Explanation: An inspiratory arrest brought on by tenderness when palpating the inflamed gallbladder beneath the right costal margin is positive Murphy's sign, diagnostic of acute cholecystitis. Kehr's sign is referred left shoulder pain from diaphragmatic irritation in splenic rupture. Blumberg's sign is generalized rebound tenderness, and McBurney's sign denotes appendicitis tenderness in the right iliac fossa.
39. In a patient with end-stage cirrhosis complicated by refractory ascites, which diagnostic and therapeutic procedure carries the greatest risk of post-procedure circulatory collapse if volume expansion is omitted?
A) Endoscopic retrograde cholangiopancreatography (ERCP)
B) Large-volume paracentesis
C) Percutaneous liver core needle biopsy
D) Upper gastrointestinal endoscopy with band ligation
Answer: B) Large-volume paracentesis
Explanation: Evacuating more than 5 liters of ascitic fluid during large-volume paracentesis can trigger paracentesis-induced circulatory dysfunction (PICD), characterized by severe arterial underfilling and renal failure. Intravenous albumin replacement is mandatory to sustain oncotic pressure. ERCP, liver biopsy, and band ligation carry bleeding or pancreatitis risks, but not systemic volume shifts.
40. Which non-absorbable oral antibiotic is combined with Lactulose in the management of recurrent hepatic encephalopathy to reduce intestinal urease-producing microflora?
A) Rifaximin
B) Ciprofloxacin
C) Vancomycin IV
D) Clindamycin
Answer: A) Rifaximin
Explanation: Rifaximin is a minimally absorbed oral rifamycin antibiotic that targets gastrointestinal bacteria, eliminating urease-producing gut flora and reducing enteric ammonia generation without systemic side effects. Ciprofloxacin and clindamycin have broad systemic distribution and alter flora indiscriminately, while intravenous vancomycin does not target enteric flora.
Endocrine System Disorders
Diabetes Mellitus & Pancreatic Crises
41. A 21-year-old with Type 1 Diabetes Mellitus presents with Kussmaul respirations, fruity breath odor, lethargy, and a blood glucose of 520 mg/dL. An ABG reveals a pH of 7.15 and serum ketones are strongly positive. What is the initial intravenous fluid resuscitation strategy?
A) 5% Dextrose in water at 200 mL/hr
B) 0.9% Normal Saline (0.9% NaCl) bolus at 1,000 mL/hr
C) 0.45% Sodium Chloride with 40 mEq KCl
D) 10% Dextrose with continuous IV regular insulin
Answer: B) 0.9% Normal Saline (0.9% NaCl) bolus at 1,000 mL/hr
Explanation: In Diabetic Ketoacidosis (DKA), patients experience severe osmotic diuresis leading to dehydration of 5 to 10 liters. The primary intervention is intravascular volume expansion with isotonic crystalloid (0.9% Normal Saline) to restore renal perfusion and tissue delivery before initiating insulin infusions. Dextrose solutions are introduced only after blood glucose drops below 200–250 mg/dL to prevent hypoglycemia and cerebral edema.
42. In managing a patient with DKA receiving an intravenous regular insulin infusion, the nurse must withhold insulin and contact the physician if the baseline serum potassium falls below:
A) 5.5 mEq/L
B) 4.5 mEq/L
C) 3.3 mEq/L
D) 3.8 mEq/L
Answer: C) 3.3 mEq/L
Explanation: Insulin drives glucose and extracellular potassium ions into skeletal muscle and hepatic cells via stimulation of the Na+/K+ ATPase pump. Administering insulin when potassium is below 3.3 mEq/L can cause fatal hypokalemic cardiac arrhythmias or respiratory arrest. Potassium must be repleted above 3.3 mEq/L before initiating insulin.
43. A diabetic client experiences diaphoresis, tremors, and tachycardia at 03:00 AM, followed by morning hyperglycemia (240 mg/dL) at 07:00 AM. This clinical phenomenon is recognized as:
A) The Dawn Phenomenon
B) The Somogyi Effect
C) Diabetic gastroparesis
D) Hyperosmolar Hyperglycemic State
Answer: B) The Somogyi Effect
Explanation: The Somogyi effect is characterized by nocturnal hypoglycemia (around 02:00 to 03:00 AM) that stimulates counter-regulatory hormone release (epinephrine, cortisol, glucagon, growth hormone), resulting in rebound morning hyperglycemia. The Dawn phenomenon exhibits morning hyperglycemia without antecedent nocturnal hypoglycemia, driven solely by diurnal surges in growth hormone and cortisol.
44. Which chronic diagnostic test evaluates average glycemic control over the preceding 90 to 120 days by measuring the glycation of hemoglobin?
A) Fasting plasma glucose
B) Two-hour oral glucose tolerance test
C) Glycosylated Hemoglobin (HbA1c)
D) Serum C-peptide level
Answer: C) Glycosylated Hemoglobin (HbA1c)
Explanation: Glucose attaches non-enzymatically to the N-terminal valine of the hemoglobin beta chain throughout the erythrocyte lifespan (120 days). Measuring HbA1c reflects average circulating glucose over the past 3 months without being swayed by day-to-day fluctuations. Fasting glucose and tolerance tests measure acute glycemic levels, while C-peptide reflects endogenous pancreatic insulin synthesis.
45. Which diagnostic finding distinguishes Hyperosmolar Hyperglycemic State (HHS) from Diabetic Ketoacidosis (DKA)?
A) Presence of deep Kussmaul respirations
B) Marked serum hyperosmolality (> 320 mOsm/kg) with minimal or absent ketosis and near-normal arterial pH
C) Blood glucose levels consistently below 300 mg/dL
D) Profound metabolic acidosis with elevated anion gap
Answer: B) Marked serum hyperosmolality (> 320 mOsm/kg) with minimal or absent ketosis and near-normal arterial pH
Explanation: HHS occurs primarily in Type 2 Diabetes, where residual endogenous insulin prevents lipolysis and ketogenesis, avoiding metabolic acidosis, while severe osmotic diuresis drives glucose > 600 mg/dL and serum osmolality > 320 mOsm/kg. DKA is defined by ketoacidosis, elevated anion gap, low pH (< 7.30), and Kussmaul breathing.
Thyroid & Adrenal Emergencies
46. Following a subtotal thyroidectomy, a patient develops perioral tingling, muscle twitches, and positive Chvostek's and Trousseau's signs. What complication has occurred?
A) Accidental intraoperative excision or devascularization of the parathyroid glands leading to acute hypocalcemia
B) Thyroid storm due to excessive release of stored thyroxine
C) Laryngeal nerve severance producing hypolaryngeal tone
D) Acute postoperative thyrotoxicosis
Answer: A) Accidental intraoperative excision or devascularization of the parathyroid glands leading to acute hypocalcemia
Explanation: Inadvertent removal or ischemia of the parathyroid glands during thyroid surgery causes parathyroid hormone (PTH) to plunge, triggering acute hypocalcemia. This manifests as neuromuscular irritability, paresthesias, tetany, and positive Chvostek's and Trousseau's signs. Thyroid storm produces hyperthermia and tachycardia, while recurrent laryngeal nerve damage produces hoarseness or stridor.
47. Which emergency intravenous medication must be kept at the bedside of a client following a total thyroidectomy?
A) Potassium chloride
B) Calcium Gluconate 10%
C) Sodium polystyrene sulfonate
D) Magnesium sulfate
Answer: B) Calcium Gluconate 10%
Explanation: Acute post-thyroidectomy hypocalcemia can trigger life-threatening laryngeal spasms, generalized tetany, and cardiac arrest. Intravenous 10% Calcium Gluconate must be readily available for emergency administration. Potassium chloride or sodium polystyrene treat potassium imbalances, and magnesium does not reverse primary acute hypocalcemic tetany.
48. A client presents with extreme hyperthermia (temperature 105°F), tachycardia (160 bpm), tremors, agitation, and delirium. The patient's history reveals Graves' disease. What endocrine emergency does this represent?
A) Myxedema coma
B) Thyroid Storm (Thyrotoxic Crisis)
C) Pheochromocytoma crisis
D) Acute Addisonian crisis
Answer: B) Thyroid Storm (Thyrotoxic Crisis)
Explanation: Thyroid storm is an acute hypermetabolic crisis caused by surges of free thyroid hormones (T3 and T4), presenting with extreme fever, severe tachycardia, delirium, dysrhythmias, and high-output heart failure. Myxedema coma involves hypothermia and hypoventilation. Pheochromocytoma triggers paroxysmal hypertension, while Addisonian crisis presents with shock and hypoglycemia.
49. A patient with long-standing primary adrenal insufficiency (Addison's disease) abruptly stops taking oral hydrocortisone. The nurse recognizes the patient is in an Addisonian crisis when they exhibit:
A) Severe hypertension, hyperglycemia, and hypernatremia
B) Profound vascular collapse/hypotension, hypoglycemia, and hyperkalemia
C) Central obesity, buffalo hump, and purple abdominal striae
D) Severe fluid retention, hyperreflexia, and bradycardia
Answer: B) Profound vascular collapse/hypotension, hypoglycemia, and hyperkalemia
Explanation: Acute withdrawal of glucocorticoids and mineralocorticoids causes sodium and water wasting, vascular collapse, severe hypotension resistant to vasopressors, hypoglycemia (loss of cortisol-mediated gluconeogenesis), and life-threatening hyperkalemia. Cushing's syndrome exhibits hypertension, hyperglycemia, and buffalo hump.
50. A patient presenting with excessive thirst (polydipsia), excretion of 12 liters of pale urine daily (polyuria), a urine specific gravity of 1.002, and elevated serum sodium is diagnosed with Diabetes Insipidus. Which synthetic hormone is the drug of choice?
A) Oxytocin
B) Desmopressin (DDAVP)
C) Levothyroxine
D) Aldosterone
Answer: B) Desmopressin (DDAVP)
Explanation: Central diabetes insipidus results from a deficiency of antidiuretic hormone (arginine vasopressin) from the posterior pituitary. Desmopressin (DDAVP) is a synthetic vasopressin V2-receptor agonist that promotes water reabsorption in the renal collecting ducts, concentrating urine and halting excessive diuresis. Oxytocin stimulates uterine contractions, levothyroxine replaces thyroid hormone, and aldosterone controls sodium-potassium exchange rather than free water clearance.
Renal & Genitourinary Disorders
Acute Kidney Injury & Chronic Renal Failure
51. An intensive care patient develops acute oliguria following severe hemorrhagic shock. Laboratory results demonstrate a BUN-to-creatinine ratio > 20:1, fractional excretion of sodium (FeNa) < 1%, and high urine specific gravity (> 1.025). This profile indicates:
A) Prerenal acute kidney injury
B) Intrarenal acute tubular necrosis
C) Postrenal obstructive uropathy
D) Chronic glomerulonephritis
Answer: A) Prerenal acute kidney injury
Explanation: Prerenal AKI is caused by hypoperfusion of structurally intact nephrons. The kidney retains sodium and water avidly to maintain circulating volume, leading to a low fractional excretion of sodium (FeNa < 1%), concentrated urine, and elevated BUN reabsorption (BUN:Cr > 20:1). Intrarenal failure damages tubular cells, which eliminates concentrating ability (FeNa > 2%, fixed specific gravity ~1.010). Postrenal failure involves structural urinary outflow obstruction.
52. Which clinical finding is the most reliable and immediate indicator of fluid balance status in an oliguric patient with End-Stage Renal Disease (ESRD)?
A) Daily body weight measured at the same time on the same calibrated scale
B) Accurate documentation of liquid dietary intake
C) Serial measurement of abdominal girth
D) Serum sodium concentration
Answer: A) Daily body weight measured at the same time on the same calibrated scale
Explanation: Weight changes in an acute setting reflect fluid gain or loss rather than tissue mass change (1 kg of acute weight change equates to approximately 1,000 mL of retained or lost fluid). Intake/output records are often inaccurate due to insensible losses, abdominal girth evaluates localized ascites rather than total-body fluid, and serum sodium reflects osmolar balance rather than total fluid volume.
53. A patient with ESRD awaiting hemodialysis develops peaked T-waves, widening of the QRS complex, and a serum potassium of 7.2 mEq/L. What is the immediate first-line medication administered to protect cardiac membrane stability?
A) Sodium polystyrene sulfonate (Kayexalate)
B) Intravenous Calcium Gluconate
C) Regular Insulin with Dextrose 50%
D) Nebulized Albuterol
Answer: B) Intravenous Calcium Gluconate
Explanation: Calcium gluconate antagonizes the membrane-depolarizing effects of severe hyperkalemia on cardiac myocytes, raising the cardiac threshold potential and stabilizing the myocardium against fatal ventricular fibrillation within minutes. It does not lower serum potassium. Insulin/dextrose and albuterol shift potassium into cells, and Kayexalate eliminates potassium via the bowel, but neither provides immediate membrane stabilization.
54. While assessing a patient's newly created left forearm arteriovenous (AV) fistula for hemodialysis, which findings confirm vascular patency?
A) Absence of any audible murmur and clear pale skin
B) A palpable thrill and a continuous audible bruit over the anastomosis site
C) Bounding radial pulse with localized cyanosis of fingers
D) Cool extremities with a slow capillary refill (> 4 seconds)
Answer: B) A palpable thrill and a continuous audible bruit over the anastomosis site
Explanation: A patent AV fistula generates high-velocity turbulent arterial blood flow into the low-pressure venous conduit, which is palpable as a continuous vibration (thrill) and audible on auscultation as a continuous vascular hum (bruit). Absence of a thrill or bruit indicates thrombosis. Cyanosis and slow capillary refill point to arterial steal syndrome rather than normal function.
55. A peritoneal dialysis patient reports that their effluent dialysate drainage is cloudy and turbid. The patient has low-grade fever and diffuse abdominal rebound tenderness. What complication is present?
A) Dialysate leak into the pleural cavity
B) Bacterial peritonitis
C) Peritoneal membrane sclerosis
D) Mechanical catheter displacement into the bladder
Answer: B) Bacterial peritonitis
Explanation: Peritonitis is the most frequent serious complication of peritoneal dialysis. Its earliest and most sensitive sign is cloudy, turbid dialysate effluent containing > 100 WBCs/mcL (with > 50% neutrophils), typically accompanied by abdominal pain, rebound tenderness, and fever. Clear yellow drainage is normal. Fluid tracking into the pleural space causes dyspnea, not cloudy effluent.
Renal Calculi & Glomerular Pathologies
56. A patient is admitted with excruciating, sharp, spasmodic flank pain that radiates anteriorly into the groin, accompanied by gross hematuria and nausea. These symptoms describe:
A) Acute pyelonephritis
B) Renal colic secondary to nephrolithiasis/ureterolithiasis
C) Interstitial cystitis
D) Polycystic kidney rupture
Answer: B) Renal colic secondary to nephrolithiasis/ureterolithiasis
Explanation: Renal colic is caused by ureteral smooth muscle spasm as a stone passes down the ureter, producing acute, agonizing flank pain radiating along the ilioinguinal nerve toward the labia or scrotum, accompanied by hematuria. Pyelonephritis features dull costovertebral tenderness with fever and pyuria, while cystitis localizes to the suprapubic area and causes dysuria.
57. What dietary restriction is most critical for a patient whose stone analysis reveals calcium oxalate urolithiasis?
A) Completely eliminate dietary calcium
B) Avoid oxalate-rich foods such as spinach, rhubarb, chocolate, nuts, and black tea
C) Restrict dietary purines and animal proteins exclusively
D) Eliminate dietary citrus fruits and maintain fluid restriction
Answer: B) Avoid oxalate-rich foods such as spinach, rhubarb, chocolate, nuts, and black tea
Explanation: Restricting high-oxalate foods prevents supersaturation of calcium oxalate in the renal collecting system. Dietary calcium should never be completely eliminated; normal calcium intake binds dietary oxalate in the gut lumen, preventing its systemic absorption. Purine restriction is indicated for uric acid stones, while fluid restriction is strictly contraindicated in all stone formers.
58. A 9-year-old child presents with periorbital edema, gross hematuria ("smoky" or "cola-colored" urine), mild hypertension, and oliguria following a group A beta-hemolytic streptococcal pharyngitis infection. This is:
A) Acute Post-Streptococcal Glomerulonephritis (APSGN)
B) Minimal Change Nephrotic Syndrome
C) Henoch-Schönlein purpura
D) Acute pyelonephritis
Answer: A) Acute Post-Streptococcal Glomerulonephritis (APSGN)
Explanation: APSGN is an immune-complex-mediated disease where streptococcal antigen-antibody complexes deposit within the glomerular basement membrane 1 to 3 weeks after pharyngitis, causing capillary inflammation, RBC leakage (cola-colored urine), impaired filtration, and fluid retention. Nephrotic syndrome presents with massive proteinuria (> 3.5 g/day) and gross edema without primary hematuria.
59. Which classic tetrad of clinical manifestations characterizes Nephrotic Syndrome?
A) Hematuria, oliguria, hypotension, and leukopenia
B) Massive proteinuria (> 3.5 g/24 hours), severe hypoalbuminemia, generalized edema, and hyperlipidemia
C) Cola-colored urine, high fever, azotemia, and polyuria
D) Flank pain, glycosuria, metabolic alkalosis, and hypercalcemia
Answer: B) Massive proteinuria (> 3.5 g/24 hours), severe hypoalbuminemia, generalized edema, and hyperlipidemia
Explanation: Podocyte effacement causes marked increase in glomerular capillary permeability, spilling albumin into the urine (> 3.5 g/day). The resulting hypoalbuminemia drops intravascular oncotic pressure, driving generalized interstitial edema (anasarca). The liver compensates for low serum proteins by upregulating synthesis of lipoproteins, precipitating hyperlipidemia. Hematuria and hypertension characterize nephritic, rather than nephrotic, states.
60. A client with chronic kidney disease exhibits an intractable, generalized uremic frost on the forehead and arms, intractable pruritus, and pericardial friction rub. These signs signify:
A) Immediate need for hemodialysis initiation due to advanced uremic syndrome
B) Mild dehydration treatable with oral fluids
C) An allergic reaction to ACE inhibitors
D) Resolution of metabolic uremic toxins
Answer: A) Immediate need for hemodialysis initiation due to advanced uremic syndrome
Explanation: Uremic frost (crystallized urea excreted via sweat glands) and uremic pericarditis reflect dangerous accumulations of nitrogenous waste products and end-stage uremia, representing absolute indications for urgent renal replacement therapy. Treating with oral fluids alone is ineffective and risks fatal pulmonary edema.
Musculoskeletal System Disorders
Fractures, Traction & Orthopedic Emergencies
61. A young male with a closed tibial fracture treated with a fiberglass cast reports severe, escalating pain out of proportion to the injury, unrelieved by intravenous morphine. Passive dorsiflexion of the toes triggers excruciating pain. The nurse suspects:
A) Deep vein thrombosis
B) Acute Compartment Syndrome
C) Osteomyelitis
D) Normal post-reduction inflammation
Answer: B) Acute Compartment Syndrome
Explanation: Compartment syndrome occurs when elevated intracompartmental pressure within an inelastic fascial sheath compromises microvascular perfusion. Disproportionate pain unrelieved by opioids and excruciating pain on passive muscle stretch are the earliest, most reliable diagnostic indicators. DVT presents with calf tenderness, while osteomyelitis is an infectious process that develops over days to weeks.
62. What is the immediate priority nursing action when acute compartment syndrome is confirmed in a casted limb?
A) Elevate the limb well above the level of the heart
B) Immediately bivalve the circumferential plaster/fiberglass cast and keep the extremity at heart level
C) Apply continuous warm moist compresses over the cast
D) Administer high-dose subcutaneous low-molecular-weight heparin
Answer: B) Immediately bivalve the circumferential plaster/fiberglass cast and keep the extremity at heart level
Explanation: Bivalving the cast relieves external constrictive pressure and decompresses the underlying compartment. The extremity must be maintained at the level of the heart; elevating it above the heart lowers arterial perfusion pressure, compounding tissue ischemia. Warm compresses increase tissue metabolic demand and edema, while anticoagulants do not relieve fascial pressure.
63. A patient who sustained closed bilateral femur fractures 36 hours ago develops acute dyspnea, confusion, tachypnea, and a petechial rash across the anterior chest wall and conjunctivae. What complication has occurred?
A) Acute bacterial endocarditis
B) Fat Embolism Syndrome (FES)
C) Transfusion-related acute lung injury
D) Hypovolemic shock
Answer: B) Fat Embolism Syndrome (FES)
Explanation: Long bone and pelvic fractures allow fat globules from bone marrow to enter the venous circulation, lodging within the pulmonary microvasculature. The classic triad of Fat Embolism Syndrome consists of respiratory insufficiency (hypoxemia, dyspnea), neurological dysfunction (confusion, lethargy), and a characteristic non-palpable petechial rash distributed over the chest, neck, and axillae.
64. When caring for a patient maintained in Buck's skin traction, which nursing intervention is essential to preserve correct mechanical traction?
A) Allow the suspended traction weights to rest firmly on the floor
B) Ensure that the traction ropes hang freely in the pulley grooves and that weights suspend clear of the floor
C) Remove the weights every 4 hours to encourage active hip range of motion
D) Wedge the patient's feet against the footboard of the bed
Answer: B) Ensure that the traction ropes hang freely in the pulley grooves and that weights suspend clear of the floor
Explanation: For traction to exert continuous pulling force, weights must hang freely without touching the floor or the bed frame, and ropes must remain unobstructed within the pulley wheels. Letting weights rest on the floor removes traction, while wedging feet against the footboard eliminates countertraction. Skin traction weights are never removed periodically for range-of-motion exercises.
65. Following an above-the-knee amputation (AKA), which nursing measure prevents hip flexion contractures during rehabilitation?
A) Maintain the residual limb elevated on a soft pillow at all times
B) Position the client prone for 20 to 30 minutes three to four times daily
C) Instruct the client to sit in a soft wheelchair for at least 8 hours a day
D) Keep the hip abducted and externally rotated using sandbags
Answer: B) Position the client prone for 20 to 30 minutes three to four times daily
Explanation: Prone positioning extends the hip joint, stretching the flexor muscles and preventing hip flexion contractures. Elevating the residual limb on pillows beyond the first 24 hours and prolonged sitting in wheelchairs maintain the hip in continuous flexion, promoting contracture formation.
Joint, Bone & Autoimmune Pathologies
66. A 62-year-old postmenopausal female has a dual-energy X-ray absorptiometry (DEXA) scan demonstrating a T-score of -2.8. How is this bone mineral density result interpreted?
A) Normal bone density
B) Osteopenia
C) Osteoporosis
D) Osteomalacia
Answer: C) Osteoporosis
Explanation: According to the World Health Organization: A T-score of -1.0 or higher is normal; a T-score between -1.0 and -2.5 defines osteopenia; and a T-score of -2.5 or lower defines osteoporosis. Osteomalacia represents inadequate mineralization of bone matrix (soft bones), usually due to vitamin D deficiency, rather than pure loss of mineral density.
67. What essential administration instruction must be provided to a client starting oral Alendronate for severe osteoporosis?
A) Ingest the tablet at bedtime with a glass of whole milk
B) Take the medication with a full glass of plain water upon awakening and remain upright for at least 30 minutes
C) Crush the medication and mix with orange juice to maximize absorption
D) Take the medication immediately after a large meal
Answer: B) Take the medication with a full glass of plain water upon awakening and remain upright for at least 30 minutes
Explanation: Oral bisphosphonates carry poor bioavailability and cause severe chemical esophagitis and esophageal ulceration. The tablet must be swallowed whole with 8 ounces of plain water on an empty stomach, and the patient must remain sitting or standing upright for at least 30 minutes to facilitate passage into the stomach. Dairy, food, and other beverages prevent absorption.
68. A 35-year-old female presents with bilateral, symmetric joint pain, morning stiffness lasting greater than 1 hour, and subcutaneous nodules over the extensor surfaces of the elbows. This clinical presentation points to:
A) Osteoarthritis
B) Rheumatoid Arthritis
C) Acute Gouty Arthritis
D) Ankylosing Spondylitis
Answer: B) Rheumatoid Arthritis
Explanation: Rheumatoid arthritis is a systemic autoimmune disease characterized by symmetric inflammatory polyarthritis affecting synovial joints, accompanied by prolonged morning stiffness (> 1 hour) that improves with movement, and rheumatoid nodules. Osteoarthritis produces asymmetric joint degeneration with brief morning stiffness (< 30 minutes) that worsens with activity. Gout typically presents as acute, monoarticular inflammation.
69. A male client awakens with sudden, excruciating pain, erythema, and swelling of the first metatarsophalangeal joint (great toe). Aspiration reveals needle-shaped, negatively birefringent monosodium urate crystals. Which medication treats this acute attack?
A) Allopurinol
B) Colchicine or Indomethacin
C) Febuxostat
D) Methotrexate
Answer: B) Colchicine or Indomethacin
Explanation: Acute gout flares (podagra) require rapid anti-inflammatory therapy with NSAIDs (e.g., indomethacin) or oral Colchicine, which blocks neutrophil tubulin assembly and migration into the joint. Allopurinol and febuxostat are xanthine oxidase inhibitors used for chronic urate-lowering therapy; starting them during an acute attack causes rapid serum urate shifts that exacerbate the flare.
70. What discharge precaution should a nurse reinforce to a client who has undergone a total right hip arthroplasty via a posterolateral approach?
A) Flex the operative hip past 90 degrees when sitting in low chairs
B) Avoid hip adduction past midline and maintain abduction with an abduction pillow
C) Cross legs at the ankles when resting in bed
D) Internally rotate the operative toes and knees when standing
Answer: B) Avoid hip adduction past midline and maintain abduction with an abduction pillow
Explanation: Posterolateral hip replacement risks posterior femoral head dislocation if the hip undergoes flexion > 90 degrees, adduction past the midline, or internal rotation. Keeping the operative leg abducted prevents the prosthetic femoral head from dislodging from the acetabular cup. Crossing the legs or sitting in low chairs forces adduction and acute flexion, risking dislocation.
Hematology & Oncology
Anemias & Coagulopathies
71. A patient with severe atrophic gastritis develops paresthesias in the lower extremities, ataxia, a smooth, beefy red tongue, and macrocytic anemia. These findings signify:
A) Iron deficiency anemia
B) Pernicious anemia secondary to intrinsic factor deficiency
C) Aplastic anemia
D) Hemolytic anemia
Answer: B) Pernicious anemia secondary to intrinsic factor deficiency
Explanation: Autoimmune destruction of gastric parietal cells in atrophic gastritis halts intrinsic factor production, preventing Vitamin B12 (cobalamin) absorption in the terminal ileum. B12 deficiency leads to megaloblastic macrocytic anemia and subacute combined degeneration of the spinal cord (paresthesias, sensory ataxia). Iron deficiency causes microcytic hypochromic anemia without neuropathic changes, and aplastic anemia manifests as pancytopenia.
72. What instruction must be provided to a client prescribed oral Ferrous Sulfate for iron-deficiency anemia?
A) Take the medication with milk or calcium antacids to reduce nausea
B) Take the medication with citrus juices (Vitamin C) on an empty stomach and expect dark, tarry stools
C) Ingest the liquid preparation directly through the teeth without a straw
D) Discontinue the drug once hemoglobin normalizes within 2 weeks
Answer: B) Take the medication with citrus juices (Vitamin C) on an empty stomach and expect dark, tarry stools
Explanation: Vitamin C (ascorbic acid) maintains iron in its soluble ferrous (Fe2+) state, enhancing duodenal absorption, while an empty stomach maximizes bioavailability. Harmless darkening of stools is expected. Calcium and antacids bind iron and inhibit absorption. Liquid iron stains tooth enamel and must be ingested through a straw, and therapy must continue for 3 to 6 months to replenish tissue ferritin stores.
73. A child with Hemophilia A sustains a deep laceration on the knee. The nurse understands that this disease is caused by a congenital deficiency of which clotting factor?
A) Factor VII
B) Factor VIII
C) Factor IX
D) Factor XI
Answer: B) Factor VIII
Explanation: Hemophilia A is an X-linked recessive bleeding disorder caused by a deficiency or qualitative defect in clotting Factor VIII. Factor IX deficiency causes Hemophilia B (Christmas disease), and Factor XI deficiency causes Hemophilia C (Rosenthal syndrome).
74. In a patient diagnosed with Immune Thrombocytopenic Purpura (ITP), the platelet count falls to 18,000/mcL. What is the priority nursing intervention?
A) Encourage daily vigorous dental flossing
B) Enforce strict bleeding precautions, eliminate intramuscular injections, and initiate fall prevention
C) Administer daily prophylactic aspirin
D) Place the patient in contact isolation
Answer: B) Enforce strict bleeding precautions, eliminate intramuscular injections, and initiate fall prevention
Explanation: A platelet count below 20,000/mcL carries high risk for spontaneous, life-threatening intracranial or gastrointestinal hemorrhage. Strict bleeding precautions include avoiding invasive procedures (such as IM injections), using soft-bristle toothbrushes, avoiding straight razors, and preventing falls. Aspirin impairs platelet aggregation, and isolation is not indicated for non-infectious thrombocytopenia.
75. A client receiving a packed red blood cell (PRBC) transfusion develops sudden chills, high fever, low back pain, and dark red urine 15 minutes after initiation. What is the priority action?
A) Slow the infusion rate and administer intravenous diphenhydramine
B) Immediately stop the transfusion, disconnect the blood tubing, and infuse 0.9% Normal Saline via fresh IV tubing
C) Reassure the patient and document vital signs
D) Flush the remaining blood with Dextrose 5% in water
Answer: B) Immediately stop the transfusion, disconnect the blood tubing, and infuse 0.9% Normal Saline via fresh IV tubing
Explanation: The patient is experiencing an acute hemolytic transfusion reaction, an ABO mismatch where recipient antibodies destroy donor erythrocytes, precipitating complement activation, shock, and acute tubular necrosis from free hemoglobin. The transfusion must be stopped immediately to limit foreign antigen delivery, and normal saline infused via new tubing to maintain renal perfusion. Never flush remaining blood, and diphenhydramine treats allergic reactions, not hemolysis.
Oncology & Chemotherapeutic Emergencies
76. A patient with acute leukemia develops high fever and an absolute neutrophil count (ANC) of 350 cells/mcL. Which infection-control measure is mandatory?
A) Reverse/protective isolation, avoiding fresh flowers, plants, and unpeeled raw fruits in the room
B) Airborne negative-pressure isolation
C) Strict droplet precautions
D) Restricting dietary cooked proteins
Answer: A) Reverse/protective isolation, avoiding fresh flowers, plants, and unpeeled raw fruits in the room
Explanation: Severe neutropenia (ANC < 500 cells/mcL) leaves the patient unable to mount a normal inflammatory response, putting them at risk for opportunistic sepsis from endogenous flora or external pathogens. Protective isolation includes a low-microbial diet (cooked foods only, no raw vegetables) and removing live plants/flowers, which harbor Pseudomonas and Aspergillus. Airborne and droplet precautions protect healthcare staff from contagious patients.
77. A client with Burkitt's lymphoma develops oliguria, hyperkalemia, hyperphosphatemia, hypocalcemia, and acute hyperuricemia 24 hours after receiving intensive induction chemotherapy. These abnormalities indicate:
A) Syndrome of Inappropriate Antidiuretic Hormone (SIADH)
B) Tumor Lysis Syndrome (TLS)
C) Disseminated Intravascular Coagulation (DIC)
D) Bone marrow failure
Answer: B) Tumor Lysis Syndrome (TLS)
Explanation: Massive, rapid breakdown of malignant cells releases intracellular components into the systemic circulation, causing hyperkalemia, hyperphosphatemia (which complexes with calcium, causing secondary hypocalcemia), and purine catabolism into uric acid, precipitating acute renal failure. SIADH presents with dilutional hyponatremia. DIC causes consumptive coagulopathy.
78. Which medication is administered prophylactically to prevent uric acid nephropathy in Tumor Lysis Syndrome by inhibiting the enzyme xanthine oxidase?
A) Rasburicase
B) Allopurinol
C) Mesna
D) Leucovorin
Answer: B) Allopurinol
Explanation: Allopurinol inhibits xanthine oxidase, preventing the conversion of hypoxanthine and xanthine into insoluble uric acid crystals in the renal tubules. Rasburicase is an enzyme that degrades pre-existing uric acid into soluble allantoin. Mesna detoxifies acrolein from ifosfamide/cyclophosphamide to prevent hemorrhagic cystitis, and leucovorin rescues normal cells from methotrexate toxicity.
79. During the intravenous infusion of Doxorubicin, an anthracycline chemotherapeutic agent, the nurse must monitor for which dose-limiting toxicity?
A) Nephrotoxicity
B) Dose-dependent cardiotoxicity and cardiomyopathy
C) Pulmonary fibrosis
D) Peripheral neuropathy
Answer: B) Dose-dependent cardiotoxicity and cardiomyopathy
Explanation: Doxorubicin causes dose-dependent free radical damage to myocardial cells, resulting in irreversible dilated cardiomyopathy and congestive heart failure. Cisplatin causes nephrotoxicity, bleomycin and busulfan cause pulmonary fibrosis, and vincristine causes peripheral neuropathy.
80. A client with small cell lung carcinoma presents with facial and periorbital edema, distended jugular and superficial thoracic veins, and dyspnea. This oncologic emergency is:
A) Superior Vena Cava (SVC) Syndrome
B) Spinal Cord Compression
C) Cardiac Tamponade
D) Carcinoid Syndrome
Answer: A) Superior Vena Cava (SVC) Syndrome
Explanation: SVC syndrome occurs when mediastinal tumors obstruct the superior vena cava, impeding venous drainage from the head, neck, and upper extremities, causing upper-body venous engorgement, facial edema, and collateral chest wall vessels. Spinal cord compression presents with back pain and motor deficits. Tamponade produces hypotension and muffled heart sounds.
Immune, Integumentary & Infectious Disorders
Integumentary & Burn Management
81. Using the Wallace Rule of Nines, calculate the total burned body surface area (TBSA) of an adult patient who sustained deep partial-thickness burns involving the entire anterior torso (chest and abdomen) and the entire right arm.
A) 18%
B) 27%
C) 36%
D) 45%
Answer: B) 27%
Explanation: In the Rule of Nines: The entire anterior trunk (chest + abdomen) equals 18%. The entire right upper extremity (arm + forearm + hand, anterior and posterior) equals 9%. Total burned area = 18% + 9% = 27%.
82. A 70 kg adult patient sustained 40% TBSA burns. Using the Parkland formula (4 mL x kg x % TBSA), how much intravenous Lactated Ringer's solution should the nurse infuse during the first 8 hours post-burn?
A) 5,600 mL
B) 11,200 mL
C) 2,800 mL
D) 4,200 mL
Answer: A) 5,600 mL
Explanation: Total 24-hour fluid requirement = 4 mL x 70 kg x 40 = 11,200 mL. Under the Parkland formula, half of the total calculated volume (11,200 / 2 = 5,600 mL) must be infused in the first 8 hours from the time of burn injury, and the remaining half administered over the subsequent 16 hours.
83. What is the most accurate clinical indicator of adequate tissue perfusion and fluid resuscitation during the acute phase of burn management?
A) Sustained systolic blood pressure > 140 mmHg
B) Continuous urine output of 0.5 to 1.0 mL/kg/hour (or 30 to 50 mL/hour in adults)
C) Serum sodium concentration > 150 mEq/L
D) Central venous pressure > 18 mmHg
Answer: B) Continuous urine output of 0.5 to 1.0 mL/kg/hour (or 30 to 50 mL/hour in adults)
Explanation: Urine output reflects end-organ perfusion and glomerular filtration, serving as the gold-standard parameter for titrating burn fluid resuscitation rates. Blood pressure can be misleading due to stress-induced catecholamine surges and vasoconstriction, and CVP target overshoots risk pulmonary edema.
84. A full-thickness circumferential burn of the left forearm creates an inelastic, leathery eschar that compromises distal radial pulses and causes severe paresthesia. What emergency bedside surgical procedure is indicated?
A) Immediate split-thickness skin grafting
B) Escharotomy
C) Amputation
D) Wide debridement down to bone
Answer: B) Escharotomy
Explanation: Circumferential full-thickness burns form rigid, unyielding eschar. As post-burn tissue edema mounts, internal compartment pressures rise, cutting off venous and arterial flow. An escharotomy (longitudinal surgical incision through the full depth of the eschar) relieves pressure, restoring distal vascular perfusion. Grafting and debridement occur later during the surgical reconstructive phase.
85. A hospitalized elderly patient has a sacral pressure injury characterized by full-thickness skin loss with visible subcutaneous adipose tissue, but bone, tendon, and muscle are not exposed. This is classified as:
A) Stage 1
B) Stage 2
C) Stage 3
D) Stage 4
Answer: C) Stage 3
Explanation: Stage 3 pressure injuries feature full-thickness loss of skin with visible adipose tissue in the ulcer bed, often with slough or undermining, but without exposure of muscle, tendon, ligament, cartilage, or bone. Stage 1 is non-blanchable erythema of intact skin; Stage 2 is partial-thickness loss with exposed dermis; Stage 4 involves direct visualization or palpable bone, muscle, or tendon.
Immunology & Infectious Pathologies
86. A patient with systemic lupus erythematosus (SLE) presents with facial erythema over the malar eminence and bridge of the nose. Which test is the most specific for confirming an SLE diagnosis?
A) Erythrocyte Sedimentation Rate (ESR)
B) Anti-double stranded DNA (anti-dsDNA) and Anti-Smith (anti-Sm) antibodies
C) Antinuclear Antibody (ANA) screening
D) Serum C-reactive protein (CRP)
Answer: B) Anti-double stranded DNA (anti-dsDNA) and Anti-Smith (anti-Sm) antibodies
Explanation: Anti-dsDNA and Anti-Smith antibodies have high diagnostic specificity for Systemic Lupus Erythematosus. While the ANA test is sensitive (> 95%), it is non-specific and occurs across multiple connective tissue disorders and healthy individuals. ESR and CRP reflect non-specific inflammation.
87. A client stung by a honeybee presents with acute stridor, diffuse urticaria, wheezing, and a blood pressure of 75/40 mmHg. What is the drug and route of choice for this medical emergency?
A) Intramuscular Epinephrine (1:1,000 dilution) injected into the anterolateral thigh
B) Intravenous Diphenhydramine
C) Oral Prednisone
D) Subcutaneous Epinephrine (1:10,000 dilution)
Answer: A) Intramuscular Epinephrine (1:1,000 dilution) injected into the anterolateral thigh
Explanation: Intramuscular epinephrine (1:1,000 concentration, 0.3 to 0.5 mg) into the vastus lateralis muscle produces rapid peak plasma levels, stimulating alpha-1 receptors (vasoconstriction to reverse hypotension) and beta-2 receptors (bronchodilation to relieve stridor and wheezing). Antihistamines and steroids are adjunctive secondary agents that do not reverse life-threatening airway collapse or shock.
88. In an individual infected with Human Immunodeficiency Virus (HIV), which diagnostic finding meets the Centers for Disease Control and Prevention (CDC) case definition for transitioning to Acquired Immunodeficiency Syndrome (AIDS)?
A) Detection of high viral load via RNA PCR
B) CD4+ T-cell lymphocyte count falling below 200 cells/mcL or presentation with an AIDS-defining opportunistic illness
C) Presence of generalized lymphadenopathy
D) Positive ELISA screening confirmed by Western Blot
Answer: B) CD4+ T-cell lymphocyte count falling below 200 cells/mcL or presentation with an AIDS-defining opportunistic illness
Explanation: The CDC criteria define the transition from HIV to AIDS when the absolute CD4+ T-lymphocyte count drops below 200 cells/mcL (or a CD4 percentage < 14%), or when the patient is diagnosed with an AIDS-defining clinical condition (e.g., Pneumocystis jirovecii pneumonia, esophageal candidiasis, Kaposi's sarcoma).
89. What is the primary route of transmission of Hepatitis A virus (HAV), requiring strict enteric and hand-hygiene contact precautions?
A) Percutaneous exposure to contaminated blood
B) Fecal-oral route through contaminated water or undercooked food
C) Inhalation of airborne respiratory droplets
D) Sexual transmission via semen and vaginal fluids
Answer: B) Fecal-oral route through contaminated water or undercooked food
Explanation: Hepatitis A and Hepatitis E are transmitted via the fecal-oral route through ingestion of contaminated food or water, requiring strict hand hygiene and enteric precautions. Hepatitis B, C, and D are transmitted parenterally through infected blood, body fluids, or sexual contact.
90. A patient in the ICU with severe urosepsis has a blood pressure of 80/40 mmHg unresponsive to a 30 mL/kg crystalloid bolus, alongside a serum lactate of 4.2 mmol/L. This clinical stage is defined as:
A) Systemic Inflammatory Response Syndrome (SIRS)
B) Sepsis
C) Septic Shock
D) Multi-Organ Dysfunction Syndrome (MODS)
Answer: C) Septic Shock
Explanation: Septic shock is a subset of sepsis characterized by persistent circulatory and cellular metabolic abnormalities, clinically defined as persistent hypotension requiring vasopressors to maintain a MAP >= 65 mmHg and a serum lactate > 2 mmol/L despite adequate fluid volume resuscitation. Sepsis is infection-induced organ dysfunction, while MODS involves failure of multiple organ systems requiring active intervention.
Perioperative, Fluid-Electrolyte & Emergency Nursing
Electrolytes & Acid-Base Chemistry
91. An ECG tracing reveals flattened T waves, ST-segment depression, and prominent U waves in a patient with prolonged nasogastric suctioning. Which electrolyte imbalance is the underlying cause?
A) Hyperkalemia
B) Hypokalemia
C) Hypercalcemia
D) Hyponatremia
Answer: B) Hypokalemia
Explanation: Gastric secretions contain large quantities of potassium and hydrochloric acid; prolonged suctioning depletes total body potassium. Hypokalemia impairs myocardial repolarization, causing ST-segment depression, decreased T-wave amplitude, and pathological U waves following the T wave. Hyperkalemia exhibits peaked T-waves, while hypercalcemia shortens the QT interval.
92. Which intravenous fluid is strictly contraindicated during the resuscitation of a patient with severe traumatic head injury and cerebral edema?
A) 0.9% Normal Saline
B) 5% Dextrose in Water (D5W)
C) Hypertonic 3% Saline
D) Plasmalyte
Answer: B) 5% Dextrose in Water (D5W)
Explanation: While D5W is isotonic in the bag, the body rapidly metabolizes dextrose upon infusion, leaving free hypotonic water. This free water shifts down osmotic gradients across the blood-brain barrier into cerebral tissue, worsening cerebral edema and elevating intracranial pressure. Normal saline and hypertonic saline maintain or elevate intravascular osmolarity, preventing cerebral swelling.
93. A client presents with a serum sodium level of 114 mEq/L and generalized tonic-clonic seizure activity. What is the emergency treatment?
A) Rapid infusion of 0.45% normal saline
B) Intravenous infusion of hypertonic 3% Sodium Chloride with frequent neurological checks
C) High-dose oral water intake
D) Furosemide monotherapy without electrolytes
Answer: B) Intravenous infusion of hypertonic 3% Sodium Chloride with frequent neurological checks
Explanation: Severe symptomatic hyponatremia (< 120 mEq/L with seizures or coma) requires careful infusion of hypertonic (3%) saline to expand intravascular osmolarity, draw excess fluid out of swollen brain cells, and stop seizures. Correction must not exceed 8–10 mEq/L in 24 hours to prevent central pontine myelinolysis (osmotic demyelination syndrome). Hypotonic solutions (0.45% saline) or oral water would worsen cerebral edema.
94. An ABG report reveals: pH 7.50, PaCO2 48 mmHg, and HCO3- 36 mEq/L. Which primary disorder is present?
A) Partially compensated metabolic alkalosis
B) Uncompensated respiratory alkalosis
C) Fully compensated metabolic acidosis
D) Mixed respiratory and metabolic alkalosis
Answer: A) Partially compensated metabolic alkalosis
Explanation: The pH is 7.50 (alkalemic, > 7.45). The HCO3- is elevated at 36 mEq/L (normal 22–26), pinpointing a metabolic origin. The PaCO2 is compensatory elevated at 48 mmHg (normal 35–45), reflecting respiratory hypoventilation to retain carbonic acid. Because the pH remains outside normal boundaries, this represents partially compensated metabolic alkalosis.
95. A patient receiving massive blood transfusions (10 units of PRBCs in 4 hours) is prone to developing hypocalcemia primarily because:
A) Packed cells contain elevated ionized calcium that downregulates parathyroid hormone
B) The citrate preservative in banked blood binds and chelates ionized serum calcium
C) Transfusions stimulate calcitonin production by thyroid C cells
D) Blood storage consumes serum albumin
Answer: B) The citrate preservative in banked blood binds and chelates ionized serum calcium
Explanation: Sodium citrate is added to stored blood products to prevent coagulation by chelating calcium. When massive volumes are infused rapidly, the liver's capacity to metabolize citrate into bicarbonate is overwhelmed; free circulating citrate binds ionized calcium, producing acute hypocalcemia and coagulopathy.
Perioperative Care & Clinical Shock
96. During general anesthesia, a patient develops sudden unexplained tachycardia, rapid elevation of end-tidal carbon dioxide (ETCO2), tachypnea, cyanosis, and generalized skeletal muscle rigidity followed by rapid hyperthermia. What is the definitive antidote?
A) Atropine Sulfate
B) Dantrolene Sodium
C) Neostigmine
D) Succinylcholine
Answer: B) Dantrolene Sodium
Explanation: Malignant hyperthermia is a pharmacogenetic hypermetabolic disorder triggered by volatile inhalational anesthetics or succinylcholine, characterized by uncontrolled calcium release from the sarcoplasmic reticulum via altered ryanodine receptors. Dantrolene sodium is a post-synaptic muscle relaxant that binds ryanodine receptor-1, halting intracellular calcium release and reversing muscular rigidity and hyperthermia.
97. On the second postoperative day following abdominal hysterectomy, the patient coughs and reports feeling "something pop open." The nurse inspects the wound and discovers loops of bowel protruding through the incision. The immediate priority intervention is:
A) Push the protruding bowel gently back into the peritoneal cavity
B) Cover the extruded bowel with sterile gauze dressings soaked in sterile normal saline and place the patient in low Fowler's position with knees flexed
C) Apply an elastic abdominal binder firmly over the exposed structures
D) Administer oral analgesics and prepare the patient for immediate ambulation
Answer: B) Cover the extruded bowel with sterile gauze dressings soaked in sterile normal saline and place the patient in low Fowler's position with knees flexed
Explanation: Wound evisceration is an emergency. The exposed viscera must be covered with sterile, warm normal saline-soaked dressings to keep delicate peritoneal tissue moist and prevent ischemic necrosis. Placing the patient in low Fowler's with knees flexed reduces abdominal wall tension. The nurse must never force protruding viscera back into the abdomen, and dry binders cause direct tissue injury.
98. A post-surgical patient with a suspected deep vein thrombosis exhibits a positive Homans' sign (calf pain on dorsiflexion). Why is aggressive elicitation of Homans' sign discouraged in contemporary nursing practice?
A) It causes permanent damage to the Achilles tendon
B) It has low diagnostic specificity and the mechanical stretch can dislodge a thrombus, precipitating a fatal pulmonary embolism
C) It triggers acute compartment syndrome in the deep calf
D) It masks arterial insufficiency
Answer: B) It has low diagnostic specificity and the mechanical stretch can dislodge a thrombus, precipitating a fatal pulmonary embolism
Explanation: Homans' sign is unreliable, demonstrating low sensitivity and specificity (frequently positive in calf muscle strains and negative in confirmed DVT). Aggressive, forceful dorsiflexion of the foot risks dislodging an unstable venous clot, causing a pulmonary embolism. Non-invasive venous duplex ultrasonography is the diagnostic standard.
99. In basic and advanced life support for an unresponsive adult victim without a pulse, what is the recommended chest compression rate and depth?
A) 80 compressions/min at a depth of 1 inch (2.5 cm)
B) 100 to 120 compressions/min at a depth of at least 2 inches (5 cm) but no greater than 2.4 inches (6 cm)
C) 140 compressions/min at a depth of 3 inches (7.5 cm)
D) 60 compressions/min with continuous positive pressure ventilations
Answer: B) 100 to 120 compressions/min at a depth of at least 2 inches (5 cm) but no greater than 2.4 inches (6 cm)
Explanation: Current resuscitation guidelines recommend a compression rate of 100 to 120 beats per minute and a depth of at least 2 inches (5 cm) up to 2.4 inches (6 cm) for adults, while allowing complete chest recoil between compressions and minimizing pauses.
100. During the initial triage of a multi-vehicle highway collision using the START (Simple Triage and Rapid Treatment) disaster protocol, which patient receives an immediate RED tag?
A) An ambulatory victim with minor lacerations and normal vital signs
B) A victim who is not breathing after repositioning the airway
C) An unconscious victim who begins breathing at 34 breaths/minute after airway opening
D) A responsive patient with a closed wrist fracture and capillary refill < 2 seconds
Answer: C) An unconscious victim who begins breathing at 34 breaths/minute after airway opening
Explanation: Under the START disaster triage protocol: Respiratory rate > 30 breaths/min places an adult victim immediately in the Immediate/Priority 1 (Red Tag) category. Ambulatory walking wounded receive Green tags, non-breathing victims after airway opening receive Black tags (deceased/expectant), and victims with stable vitals who cannot walk receive Yellow tags (delayed).
Conclusion & Next Steps for Nursing Officer 2026 Preparation
Consistent, rationale-focused revision of high-yield Medical-Surgical Nursing MCQs is the most dependable strategy to secure top ranks in competitive examinations like AIIMS NORCET, RRB Staff Nurse, State PSC, and NCLEX. Reviewing the clinical reasoning behind both correct answers and distractors builds the diagnostic intuition needed for complex, scenario-based questions.
Continue your exam preparation with our other high-yield nursing quizzes on allnursingjobs4u.blogspot.com:
- Pediatric Nursing & Child Health MCQ Practice Test
- Obstetric & Gynecological Nursing High-Yield Questions
- Community Health Nursing & Epidemiology Mock Test
- Microbiology and Infection Control Clinical Quiz
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