Introduction: Congestive heart failure MCQs With Answer provide B. Pharm students a focused, exam-oriented resource to master pathophysiology, pharmacotherapy, and clinical management of heart failure. This concise collection emphasizes drug mechanisms, dosing considerations, adverse effects, monitoring parameters, and guideline-based therapy including ACE inhibitors, ARBs, ARNIs, beta-blockers, diuretics, aldosterone antagonists, and SGLT2 inhibitors. Designed to boost clinical reasoning and prescription accuracy, these MCQs blend core pharmacology with practical scenarios to prepare pharmacy graduates for hospital and community practice. Clear explanations and updated drug concepts help reinforce safe, evidence-based care in congestive heart failure. Now let’s test your knowledge with 50 MCQs on this topic.
Q1. Which of the following best defines congestive heart failure (CHF)?
- Acute myocardial ischemia without functional impairment
- Inability of the heart to pump sufficient blood to meet metabolic demands
- Primary pulmonary disease leading to edema
- Transient arrhythmia causing chest pain
Correct Answer: Inability of the heart to pump sufficient blood to meet metabolic demands
Q2. Which biomarker is most widely used to support the diagnosis of heart failure?
- C-reactive protein (CRP)
- Troponin I
- B-type natriuretic peptide (BNP)
- Creatine kinase-MB (CK-MB)
Correct Answer: B-type natriuretic peptide (BNP)
Q3. According to NYHA classification, which class describes patients with symptoms at rest?
- Class I
- Class II
- Class III
- Class IV
Correct Answer: Class IV
Q4. Which drug class is first-line for reducing mortality in systolic heart failure?
- Loop diuretics
- ACE inhibitors
- Calcium channel blockers
- H2 receptor blockers
Correct Answer: ACE inhibitors
Q5. Which of the following is a common adverse effect of ACE inhibitors?
- Hyperkalemia
- Hypokalemia
- Bradykinesia
- Gingival hyperplasia
Correct Answer: Hyperkalemia
Q6. Which medication is an angiotensin receptor neprilysin inhibitor (ARNI)?
- Sacubitril/valsartan
- Lisinopril
- Losartan
- Spironolactone
Correct Answer: Sacubitril/valsartan
Q7. Which diuretic is preferred for rapid relief of pulmonary congestion in acute decompensated CHF?
- Hydrochlorothiazide
- Spironolactone
- Furosemide
- Amiloride
Correct Answer: Furosemide
Q8. Beta-blockers improve survival in chronic heart failure by which primary mechanism?
- Increasing preload
- Reducing sympathetic overactivity
- Direct vasodilation of coronaries
- Blocking aldosterone
Correct Answer: Reducing sympathetic overactivity
Q9. Which beta-blocker has proven mortality benefit in HFrEF and is commonly used?
- Atenolol
- Metoprolol succinate
- Propranolol
- Timolol
Correct Answer: Metoprolol succinate
Q10. Which potassium-sparing diuretic is an aldosterone antagonist used in heart failure?
- Furosemide
- Torsemide
- Spironolactone
- Indapamide
Correct Answer: Spironolactone
Q11. Which class of drugs is contraindicated in patients with symptomatic HFrEF due to negative inotropic effects?
- ACE inhibitors
- Non-dihydropyridine calcium channel blockers (verapamil, diltiazem)
- Beta-blockers
- ARBs
Correct Answer: Non-dihydropyridine calcium channel blockers (verapamil, diltiazem)
Q12. Digoxin primarily exerts its beneficial effect in heart failure by:
- Blocking beta receptors
- Increasing intracellular calcium via Na+/K+-ATPase inhibition
- Inhibiting ACE
- Antagonizing aldosterone
Correct Answer: Increasing intracellular calcium via Na+/K+-ATPase inhibition
Q13. Which lab parameter must be closely monitored when a patient is on loop diuretics and ACE inhibitors?
- Blood glucose
- Serum potassium and creatinine
- Serum bilirubin
- Plasma osmolality
Correct Answer: Serum potassium and creatinine
Q14. Which drug class reduces both preload and afterload and is useful in hypertensive heart failure?
- ACE inhibitors
- Loop diuretics
- Ivabradine
- Cardiac glycosides
Correct Answer: ACE inhibitors
Q15. Which of the following is a common sign of right-sided heart failure?
- Pulmonary edema
- Jugular venous distension
- Basal crepitations
- Orthopnea
Correct Answer: Jugular venous distension
Q16. Ivabradine lowers heart rate by inhibiting which current in the sinoatrial node?
- Delayed rectifier potassium current (IKr)
- Funny current (If)
- Fast sodium current (INa)
- Calcium L-type current (ICaL)
Correct Answer: Funny current (If)
Q17. SGLT2 inhibitors such as dapagliflozin benefit heart failure patients primarily through:
- Increasing insulin secretion
- Renal glucose reabsorption
- Diuresis and favorable cardiovascular effects
- Direct inotropic effect
Correct Answer: Diuresis and favorable cardiovascular effects
Q18. Which adverse effect is most associated with spironolactone therapy?
- Hypercalcemia
- Gynecomastia
- Hypoglycemia
- Prolonged QT
Correct Answer: Gynecomastia
Q19. Which combination is recommended in ACE inhibitor–intolerant African American patients with advanced HFrEF to reduce mortality?
- Hydralazine and nitrates
- ACE inhibitor and beta-blocker
- ARB and spironolactone
- Digoxin and loop diuretic
Correct Answer: Hydralazine and nitrates
Q20. Which hemodynamic change is characteristic of systolic heart failure?
- Increased ejection fraction
- Reduced left ventricular ejection fraction
- Normal stroke volume
- Decreased end-diastolic volume
Correct Answer: Reduced left ventricular ejection fraction
Q21. Which drug requires therapeutic drug monitoring due to narrow therapeutic index in heart failure?
- Enalapril
- Digoxin
- Spironolactone
- Furosemide
Correct Answer: Digoxin
Q22. Use of NSAIDs in heart failure patients can worsen symptoms primarily by:
- Increasing heart rate
- Promoting sodium and water retention
- Blocking beta receptors
- Lowering blood pressure excessively
Correct Answer: Promoting sodium and water retention
Q23. Which of the following is a direct vasodilator used in heart failure often combined with nitrates?
- Hydralazine
- Propranolol
- Enalapril
- Losartan
Correct Answer: Hydralazine
Q24. What is the primary mechanism of loop diuretics like furosemide?
- Inhibition of Na+/K+/2Cl- cotransporter in thick ascending limb
- Blockade of ENaC in collecting duct
- Inhibition of Na+/Cl- cotransporter in distal tubule
- Stimulation of aldosterone receptors
Correct Answer: Inhibition of Na+/K+/2Cl- cotransporter in thick ascending limb
Q25. Which change is expected in pulmonary capillary wedge pressure in left-sided heart failure?
- Decreased
- No change
- Increased
- Fluctuates unpredictably
Correct Answer: Increased
Q26. Which of the following is an important counseling point for patients starting ACE inhibitors?
- Expect significant hair loss
- Stop drug if cough develops
- Avoid potassium supplements due to hyperkalemia risk
- Increase NSAID use to reduce side effects
Correct Answer: Avoid potassium supplements due to hyperkalemia risk
Q27. Which imaging modality is most useful to assess ejection fraction and structural heart disease in CHF?
- Chest X-ray
- Echocardiography
- Abdominal ultrasound
- Electrocardiogram (ECG)
Correct Answer: Echocardiography
Q28. Which electrolyte disturbance increases the risk of digoxin toxicity?
- Hypernatremia
- Hypokalemia
- Hypercalcemia
- Hypomagnesemia
Correct Answer: Hypokalemia
Q29. What is the recommended initial monitoring parameter after initiating an ARNI like sacubitril/valsartan?
- Liver function tests weekly
- Serum creatinine and potassium
- Blood glucose hourly
- ECG daily
Correct Answer: Serum creatinine and potassium
Q30. Which device therapy reduces sudden cardiac death in selected HFrEF patients?
- External pacemaker
- Implantable cardioverter-defibrillator (ICD)
- Left atrial appendage closure
- Bronchodilator nebulizer
Correct Answer: Implantable cardioverter-defibrillator (ICD)
Q31. Which antihypertensive should be used cautiously in heart failure due to potential fluid retention?
- ACE inhibitors
- Thiazolidinediones (pioglitazone) — antidiabetic class
- Loop diuretics
- ARNI
Correct Answer: Thiazolidinediones (pioglitazone) — antidiabetic class
Q32. Acute pulmonary edema in CHF is primarily treated initially with:
- High-dose beta-blocker
- Intravenous loop diuretics and oxygen
- Oral ACE inhibitor only
- Calcium channel blocker
Correct Answer: Intravenous loop diuretics and oxygen
Q33. Which statement about ARBs is correct in the context of heart failure?
- They increase bradykinin levels more than ACE inhibitors
- They are contraindicated when ACE inhibitors are tolerated
- They block angiotensin II receptors and are alternatives to ACE inhibitors
- They cause more cough than ACE inhibitors
Correct Answer: They block angiotensin II receptors and are alternatives to ACE inhibitors
Q34. What is a common sign of left-sided heart failure on physical exam?
- Peripheral pitting edema only
- Bibasilar crackles and orthopnea
- Hepatomegaly without lung findings
- Jaundice
Correct Answer: Bibasilar crackles and orthopnea
Q35. Which of the following is a neprilysin inhibition effect that benefits heart failure patients?
- Increased angiotensin II degradation
- Reduced natriuretic peptide levels
- Enhanced levels of natriuretic peptides leading to vasodilation
- Direct increase in aldosterone synthesis
Correct Answer: Enhanced levels of natriuretic peptides leading to vasodilation
Q36. Which of these medications is indicated to reduce hospitalization in symptomatic chronic HFrEF with heart rate >70 bpm despite beta-blocker therapy?
- Ivabradine
- Digoxin
- Hydrochlorothiazide
- Losartan
Correct Answer: Ivabradine
Q37. Which parameter is most useful to evaluate congestion and response to diuretics in CHF?
- Serum albumin
- Daily weight
- Blood pressure only
- Serum bilirubin
Correct Answer: Daily weight
Q38. Which heart failure stage classification by ACC/AHA refers to patients at high risk for HF but without structural disease or symptoms?
- Stage A
- Stage B
- Stage C
- Stage D
Correct Answer: Stage A
Q39. Which anticoagulant consideration is important in heart failure patients with atrial fibrillation?
- Anticoagulation is never needed
- Evaluate CHA2DS2-VASc score to guide therapy
- Use aspirin instead of anticoagulants routinely
- Anticoagulants are contraindicated with ACE inhibitors
Correct Answer: Evaluate CHA2DS2-VASc score to guide therapy
Q40. Which side effect warrants immediate discontinuation of ACE inhibitor therapy?
- Persistent dry cough
- Acute angioedema (facial or airway swelling)
- Transient dizziness on first dose
- Mild hyperkalemia (5.2 mEq/L)
Correct Answer: Acute angioedema (facial or airway swelling)
Q41. Which monitoring frequency is appropriate after initiating high-dose loop diuretics in hospitalized CHF patient?
- Electrolytes and renal function daily
- No monitoring needed
- Check labs once monthly
- ECG every hour only
Correct Answer: Electrolytes and renal function daily
Q42. Which of the following describes cardiorenal syndrome in CHF?
- Renal dysfunction causing pulmonary embolism
- Concurrent impairment of heart and kidney function where each worsens the other
- Kidney hyperfiltration improving cardiac output
- Isolated urinary tract infection in HF patients
Correct Answer: Concurrent impairment of heart and kidney function where each worsens the other
Q43. Which electrolyte supplementation may be needed when loop diuretics cause losses?
- Iron
- Potassium and magnesium
- Phosphate only
- Vitamin B12
Correct Answer: Potassium and magnesium
Q44. Which statement about chronic use of high-dose loop diuretics is true?
- They reduce mortality in HFrEF like ACE inhibitors do
- They primarily relieve symptoms by reducing volume overload
- They increase preload permanently
- They are contraindicated with beta-blockers
Correct Answer: They primarily relieve symptoms by reducing volume overload
Q45. Which comorbidity most commonly exacerbates heart failure and requires careful medication management?
- Osteoarthritis
- Diabetes mellitus
- Psoriasis
- Glaucoma
Correct Answer: Diabetes mellitus
Q46. Which pharmacokinetic change in elderly patients affects dosing of many HF drugs?
- Increased renal clearance
- Decreased renal function requiring dose adjustments
- Faster hepatic metabolism always
- Complete resistance to diuretics
Correct Answer: Decreased renal function requiring dose adjustments
Q47. Which medication is used as an intravenous inotrope in cardiogenic shock to increase cardiac output?
- Metoprolol
- Dobutamine
- Lisinopril
- Spironolactone
Correct Answer: Dobutamine
Q48. Which lifestyle modification is essential counseling for CHF patients to reduce admissions?
- Excess sodium intake
- Daily weight monitoring and salt restriction
- Rapid fluid loading
- Smoking more to reduce stress
Correct Answer: Daily weight monitoring and salt restriction
Q49. In acute decompensated heart failure with hypotension and congestion, which intervention may be indicated?
- High-dose oral beta-blocker immediately
- Careful use of IV vasopressors or inotropes guided by hemodynamics
- Immediate discontinuation of all heart failure medications forever
- Administer oral NSAIDs to improve perfusion
Correct Answer: Careful use of IV vasopressors or inotropes guided by hemodynamics
Q50. Which pharmacological action contributes to long-term cardiac remodeling reversal in heart failure?
- Persistent sympathetic activation
- Blockade of renin-angiotensin-aldosterone system (RAAS)
- Chronic high salt intake
- Untreated hypertension
Correct Answer: Blockade of renin-angiotensin-aldosterone system (RAAS)
