1) Which of the following β-blockers is noted for also producing vasodilation by blocking vascular α-receptors?

2) Dronedarone is preferred over amiodarone for some patients because it:

3) Adenosine’s key anti-arrhythmic action is:

4) Reducing preload in IHD primarily helps by:

5) Nicorandil treats angina through a dual mechanism involving:

6) What is the term for abnormal pacemaker activity originating outside the SA node?

7) What substance, naturally produced in the body and also used clinically, powerfully stimulates the activity of Antithrombin?

8) Which vessel type is primarily responsible for controlling systemic blood pressure (BP) due to its high smooth muscle content?

9) Beta-blockers are generally not preferred first-line for hypertension unless there are additional indications because:

10) How does aspirin achieve its antiplatelet effect?

11) Fibrinolytic drugs are most effective when administered:

12) Calcium Channel Blockers (CCBs) like nifedipine and amlodipine cause vasodilation and reduce BP by:

13) Which natural anticoagulant, produced by endothelial cells, is a key inhibitor of both thrombin and activated Factor X?

14) A patient on antihypertensive treatment experiences cold hands and feet. He is likely taking which medication?

15) Compared to ACEIs, Angiotensin Receptor Blockers (ARBs – e.g., losartan) have the main advantage of:

16) What is the specific reversal agent for bleeding caused by unfractionated heparin?

17) A 48-year-old hypertensive patient started on thiazide diuretics has improved BP but develops muscle weakness and fatigue. Labs show hypokalemia. What is the likely explanation?

18) What is the primary trigger for the Intrinsic Pathway?

19) Statins are recommended for use in patients with type 1 diabetes primarily because they:

20) Re-entrant circuits causing arrhythmias require:

21) A key adverse effect of digoxin exacerbated by hypokalaemia is:

22) Why does the anticoagulant effect of warfarin take several days to develop fully?

23) Which mechanism is described as a “slower, more sustained mechanism” in BP regulation due to changes in total body water?

24) A 56-year-old woman with hypertension and heart failure is prescribed an ACE inhibitor. What beneficial effect beyond BP lowering is expected?

25) Why is Streptokinase typically used only once in a patient’s lifetime?

26) A 72-year-old woman with isolated systolic hypertension is prescribed amlodipine. What is the most likely mechanism of its antihypertensive effect?

27) Which fibrinolytic drug is derived from bacterial sources and carries a significant risk of allergic reaction and antibody formation?

28) The Final Common Pathway of coagulation involves the activation of:

29) Heparin-Induced Thrombocytopenia (HIT) is caused by:

30) Which class is typically recommended as first-line treatment for hypertension in a younger diabetic patient?

31) Which of the following drugs is a K + -channel agonist used as a vasodilator in IHD?

32) What is the specific reversal agent for life-threatening bleeding caused by dabigatran?

33) The plateau phase (Phase 2) of the cardiac action potential is maintained by:

34) Amiodarone’s half-life is approximately:

35) Sympathetic activation in early heart failure is compensatory because it:

36) Atrial flutter due to a re-entrant mechanism is best controlled with which of the following, especially if structural heart disease is present?

37) Spironolactone is considered a useful second-line agent in resistant hypertension primarily because:

38) The proposed mechanism for statin-induced muscle pain involves:

39) The characteristic dry cough associated with ACEIs is primarily attributed to:

40) A 45-year-old woman with resistant hypertension is started on spironolactone. What is the main mechanism by which this drug helps reduce blood pressure?

41) What is a key vascular side effect of non-selective beta-blockers like propranolol, and what is its mechanism?

42) A 70-year-old woman with a history of angina complains of frequent headaches and facial flushing after starting a new medication. She takes a sublingual drug during chest pain. What is the likely medication?

43) According to the equation BP = CO x TPR, what does the Sympathetic Nervous System (SNS) primarily increase via β-receptors and α-receptors, respectively?

44) Which equation correctly represents systemic blood pressure regulation?

45) Which drug interaction increases digoxin toxicity risk?

46) What is the key enzyme responsible for dissolving the fibrin clot?

47) Which drug is contraindicated in patients with heart failure or post-MI?

48) Which ion influx primarily causes depolarization in the SA and AV nodes?

49) Which class of drugs primarily treats IHD by slowing the heart rate, reducing contractility, and thereby decreasing myocardial oxygen consumption?

50) Which drug prolongs the AV nodal action potential and delays conduction?

51) Why are antiplatelet drugs generally more effective at preventing arterial thrombosis than venous thrombosis?

52) The synergistic action of combining Ezetimibe with a Statin results in:

53) A 58-year-old hypertensive man is given hydralazine. Which of the following is a common reflex response to its vasodilator action?

54) Why are nitrate vasodilators such as glyceryl trinitrate (GTN) not suitable for long-term monotherapy in HTN?

55) Why is digoxin especially useful in heart failure with atrial fibrillation?

56) Which drug class is a cornerstone in heart failure treatment due to its effects on preload, afterload, and SNS activity?

57) What is the primary mechanism of action of ACE inhibitors in HTN treatment?

58) Why must heparin (unfractionated or LMW) be administered parenterally (injected)?

59) What is the primary function of healthy vascular endothelium in preventing inappropriate clotting?

60) What is a critical reason ACEIs and ARBs should NEVER be co-prescribed?

61) A patient with premature ventricular contractions (PVCs) originating from an ectopic ventricular focus after MI is treated. Which drug is preferred?

62) A patient is started on losartan for HTN. Which advantage does losartan have over enalapril?

63) Compared to arterial thrombi, venous thrombi typically contain a higher proportion of:

64) Amiodarone’s primary mechanism of action is:

65) Dabigatran is classified as a:

66) A major limitation of sustained nitrate therapy (e.g., patches, infusions) for chronic angina is:

67) What is the major side effect of minoxidil that limits its use in first-line HTN therapy?

68) Refractoriness during the cardiac action potential prevents:

69) Which of the following is NOT a primary goal of drug therapy in IHD?

70) Which molecule, released by activated platelets and sticking via specific receptors, forms the fibrous network trapping cells?

71) What is the primary endogenous mediator responsible for the vasodilator effect of Glyceryl Trinitrate (GTN)?

72) What is the primary mechanism by which reducing heart rate improves coronary artery blood flow in IHD?

73) A patient on combination antihypertensive therapy is found to have dangerously low GFR and hyperkalemia. Which drug combination is most likely responsible?

74) Why must β-blockers be used cautiously in heart failure?

75) Bosentan, an endothelin-receptor antagonist, is primarily used for:

76) Why is sublingual administration critical for GTN’s rapid effect in acute angina?

77) Alteplase and Tenecteplase are:

78) A 64-year-old man with HTN and benign prostatic hyperplasia (BPH) is started on prazosin. Which of the following is the most likely early adverse effect to monitor?

79) A patient develops ventricular tachycardia after a myocardial infarction. What is the most likely underlying electrophysiologic mechanism?

80) Platelet activation and aggregation at an injury site is a classic example of:

81) Digoxin’s mechanism in heart failure includes:

82) Which of the following is a CONTRAINDICATION for statin use?

83) Why are Thiazide diuretics considered to have a sustained effect in hypertension beyond their initial diuretic action?

84) Sotalol has combined actions of:

85) Minoxidil is reserved for severe, resistant hypertension primarily because it:

86) Digoxin can be useful in atrial fibrillation by:

87) ACEIs are preferred over ARAs in heart failure unless:

88) A 58-year-old man with hypertension presents with a persistent dry cough after starting antihypertensive therapy 3 weeks ago. Which drug is the most likely cause?

89) How does heparin primarily exert its anticoagulant effect?

90) A patient on minoxidil for refractory hypertension presents with new-onset hirsutism. What is the mechanism behind this effect?

91) Vitamin K is essential for the hepatic synthesis of which clotting factors?

92) A 65-year-old man with type 2 diabetes and proteinuria is diagnosed with stage 1 hypertension. Which medication is most appropriate to initiate?

93) A 35-year-old woman with pulmonary arterial hypertension is treated with bosentan. What serious adverse effect should be regularly monitored?

94) A patient with HTN develops angioedema after starting an antihypertensive. Which of the following is the most likely cause?

95) Vasodilators benefit angina pectoris by which of the following actions?

96) Spironolactone is effective in hypertension and heart failure primarily because it:

97) Statins exert their primary lipid-lowering effect by inhibiting which enzyme?

98) Lidocaine (Class Ib) is effective only in:

99) Warfarin exerts its anticoagulant effect by:

100) What is the specific reversal agent for life-threatening bleeding caused by warfarin?

101) Why do PDE inhibitors (e.g., milrinone) improve contractility without increasing heart rate?

102) Which of the following drugs slows conduction through the AV node and is most effective for re-entrant supraventricular tachycardia?

103) Which drug causes antimuscarinic side effects (e.g., dry mouth, constipation)?

104) Apixaban and Rivaroxaban are classified as:

105) What defines a cardiac arrhythmia?

106) A 60-year-old male is started on nifedipine for hypertension. Two weeks later, he reports swollen ankles. What is the most likely cause of this symptom?

107) A 67-year-old man with a history of myocardial infarction presents with sustained ventricular tachycardia. Which drug is most appropriate to break a re-entrant circuit in this setting?

108) The antiplatelet effect of a single dose of aspirin lasts several days primarily because:

109) How do diuretics (e.g., furosemide) benefit heart failure?

110) Which endothelium-derived substance is a potent vasoconstrictor?

111) A patient with HTN is on aliskiren monotherapy. Which clinical condition requires caution or avoidance of this drug in combination with ACEIs or ARBs?

112) A 70-year-old woman presents with atrial fibrillation due to an ectopic focus in the atria. Which agent is most suitable to control ventricular rate by slowing AV nodal conduction?

113) What is the primary mechanism by which β-blockers help reduce blood pressure, specifically regarding the RAAS?

114) Ezetimibe lowers cholesterol levels by:

115) Which class is typically preferred as first-line treatment for hypertension in an older non-diabetic patient?

116) Which anti-arrhythmic agent is most pro-arrhythmic and should be avoided in patients with structural heart disease or previous MI due to risk of fatal arrhythmias from ectopic foci?

117) Clopidogrel and Prasugrel exert their antiplatelet effect by:

118) A key reason ACEIs (like ramipril) are beneficial in diabetic nephropathy is that they:

119) Why are Adenosine-receptor antagonists (like Clopidogrel) often used in combination with Aspirin?

120) Prazosin and Doxazosin reduce blood pressure primarily by:

121) What is the primary trigger for the Extrinsic Pathway?

122) Which drug class directly inhibits the enzyme responsible for converting Angiotensin I to Angiotensin II, making it a key target in hypertension?

123) Aliskiren is unique among RAAS-targeting drugs because it is a:

124) Adenosine must be avoided in asthma because it:

125) . What initiates the “vicious cycle” in heart failure?