Atrial Fibrillation MCQ Quiz | Cardiovascular System

Welcome to the Atrial Fibrillation (AF) quiz for MBBS students. This comprehensive assessment is designed to test your understanding of one of the most common cardiac arrhythmias encountered in clinical practice. The quiz covers essential topics including pathophysiology, ECG interpretation, risk stratification using scores like CHA₂DS₂-VASc and HAS-BLED, management strategies for rate and rhythm control, and principles of anticoagulation to prevent thromboembolic complications. This module is crucial for developing clinical acumen in cardiology. After completing the 25 questions, submit your answers to see your score and review the correct responses. You will also have the option to download a PDF document containing all the questions and their correct answers for your future reference and revision.

1. What is the hallmark ECG finding that defines Atrial Fibrillation?

2. The underlying pathophysiology of Atrial Fibrillation is primarily related to:

3. A 76-year-old male with hypertension and a history of stroke presents with new-onset AF. What is his CHA₂DS₂-VASc score?

4. The most feared and common major complication of non-valvular atrial fibrillation is:

5. In a hemodynamically stable patient with AF and a rapid ventricular response (RVR), which class of drugs is often used as first-line for rate control?

6. The “pill-in-the-pocket” approach for pharmacologic cardioversion of paroxysmal AF is most appropriate for which drug?

7. Which of the following is a direct oral anticoagulant (DOAC) used for stroke prevention in AF?

8. Atrial fibrillation in the presence of which condition is specifically defined as “valvular AF”, often requiring warfarin over DOACs?

9. A patient with AF presents with hypotension, altered mental status, and signs of shock. What is the immediate management?

10. What are the chaotic, low-amplitude atrial waves seen on an ECG in AF called?

11. Which Class III antiarrhythmic drug is highly effective for maintaining sinus rhythm but has a significant potential for multi-organ toxicity, including thyroid, liver, and pulmonary issues?

12. What is a very common clinical setting for the development of new-onset atrial fibrillation?

13. The vast majority (>90%) of thrombi in patients with non-valvular AF originate from which cardiac structure?

14. The HAS-BLED score is a clinical tool used to assess:

15. Chronic, persistent Atrial Fibrillation can lead to which structural change in the atria, a process known as atrial remodeling?

16. What is the primary mechanism by which digoxin helps in rate control for AF?

17. A patient with AF of unknown duration requires elective cardioversion. What is the standard anticoagulation protocol surrounding the procedure?

18. Which of the following is a major modifiable risk factor for developing Atrial Fibrillation?

19. The primary procedural target for catheter ablation to treat paroxysmal AF is the:

20. “Holiday Heart Syndrome” refers to new-onset Atrial Fibrillation typically associated with:

21. Which endocrine disorder is a well-known reversible cause of secondary atrial fibrillation?

22. Which laboratory test is essential for monitoring the therapeutic effect of warfarin?

23. The ventricular rate in Atrial Fibrillation is determined by the conduction properties of the:

24. Atrial Fibrillation that terminates spontaneously or with intervention within 7 days of onset is classified as:

25. A patient on long-term amiodarone for AF should be regularly monitored for which of the following?