CCT CCT Pharmacology & Cardiac Medications

Question 1

Which class of drugs is used as first-line treatment to slow the ventricular rate in atrial fibrillation by blocking AV nodal conduction?

Accepted Answer

Beta-blockers

Answer

Loop diuretics

Answer

ACE inhibitors

Answer

Thrombolytics

Question 2

Atropine is administered during bradycardia primarily because it:

Accepted Answer

Blocks vagal (parasympathetic) tone to increase heart rate

Answer

Increases potassium levels

Answer

Decreases cardiac output

Answer

Blocks calcium channels

Question 3

Which antiarrhythmic drug is considered a Class III agent and is commonly used for ventricular and supraventricular arrhythmias?

Accepted Answer

Amiodarone

Answer

Lidocaine

Answer

Metoprolol

Answer

Digoxin

Question 4

Nitroglycerin relieves angina primarily by:

Accepted Answer

Dilating coronary arteries and reducing preload

Answer

Increasing heart rate

Answer

Blocking beta receptors

Answer

Raising blood pressure

Question 5

A patient receiving heparin infusion should be monitored primarily with which laboratory test?

Accepted Answer

Activated partial thromboplastin time (aPTT)

Answer

Prothrombin time (PT)

Answer

Complete blood count (CBC)

Answer

Basic metabolic panel (BMP)

Question 6

Which electrolyte imbalance can potentiate digoxin toxicity and increase the risk of fatal arrhythmias?

Accepted Answer

Hypokalemia

Answer

Hypernatremia

Answer

Hypercalcemia

Answer

Hypermagnesemia