FREE Pharmacology Cardiovascular Pharmacology Questions and Answers

Question 1

A 65-year-old patient with a history of hypertension and stable angina is prescribed a beta-blocker.
Which of the following is a key mechanism by which beta-blockers reduce myocardial oxygen demand in angina?

Accepted Answer

Reducing heart rate, contractility, and blood pressure

Answer

Increasing heart rate and contractility

Answer

Decreasing preload and afterload

Answer

Potentiation of nitric oxide release

Question 2

Which of the following classes of antiarrhythmic drugs primarily blocks sodium channels, thereby slowing the rate of depolarization and impulse conduction in the heart?

Accepted Answer

Class I (Sodium Channel Blockers)

Answer

Class II (Beta-blockers)

Answer

Class III (Potassium Channel Blockers)

Answer

Class IV (Calcium Channel Blockers)

Question 3

A patient is admitted to the emergency department with acute decompensated heart failure and pulmonary edema. Which of the following medications would be most appropriate for rapid reduction of preload?

Accepted Answer

Furosemide

Answer

Amlodipine

Answer

Lisinopril

Answer

Digoxin

Question 4

A patient with essential hypertension is prescribed an ACE inhibitor. Which of the following adverse effects is most commonly associated with ACE inhibitors?

Accepted Answer

Hyperkalemia

Answer

Hypoglycemia

Answer

Bradycardia

Answer

Bronchospasm

Question 5

Which mechanism best describes the action of organic nitrates (e.g., nitroglycerin) in relieving angina pectoris?

Accepted Answer

Promoting systemic venodilation to reduce preload

Answer

Directly inhibiting cardiac contractility

Answer

Increasing coronary artery vasoconstriction

Answer

Blocking beta-adrenergic receptors

Question 6

A patient with atrial fibrillation is initiated on warfarin therapy. What is the primary mechanism of action of warfarin?

Accepted Answer

Inhibiting vitamin K epoxide reductase

Answer

Directly inhibiting thrombin

Answer

Irreversibly binding to platelet glycoprotein IIb/IIIa receptors

Answer

Activating antithrombin III

A 65-year-old patient with a history of hypertension and stable angina is prescribed a beta-blocker.Which of the following is a key mechanism by which beta-blockers reduce myocardial oxygen demand in angina?

A 65-year-old patient with a history of hypertension and stable angina is prescribed a beta-blocker.
Which of the following is a key mechanism by which beta-blockers reduce myocardial oxygen demand in angina?