AF Treatment Options 2

Question 1

Which antiarrhythmic drug is contraindicated in patients with AF and structural heart disease due to increased mortality risk?

Accepted Answer

Flecainide

Answer

Flecainide is contraindicated in structural heart disease because it can cause proarrhythmia and increased mortality in these patients.

Question 2

What is the recommended INR target range for warfarin anticoagulation in patients with non-valvular AF?

Accepted Answer

2.0–3.0

Answer

The standard INR target for non-valvular AF on warfarin is 2.0–3.0, balancing stroke prevention against bleeding risk.

Question 3

Which procedure creates linear lesions in the left atrium to block reentrant circuits causing AF?

Accepted Answer

Surgical maze procedure

Answer

The surgical Cox-Maze procedure creates a series of incisions or ablation lines that block the reentrant circuits responsible for AF.

Question 4

A patient with AF and CrCl of 15 mL/min requires anticoagulation. Which agent is most appropriate?

Accepted Answer

Warfarin

Answer

Warfarin is preferred in severe renal impairment (CrCl <15 mL/min or dialysis) because DOACs are renally cleared and lack sufficient safety data in this population.

Question 5

Catheter ablation for AF primarily targets which anatomical structures to achieve pulmonary vein isolation?

Accepted Answer

Pulmonary vein ostia

Answer

Pulmonary vein isolation targets the ostia of the pulmonary veins, which are the dominant source of ectopic triggers initiating AF.

(AF) Atrial Fibrillation Certification Practice Test

(AF) Atrial Fibrillation Certification Practice Test

AF Treatment Options 2