High-yield Arrhythmia Mcq Quiz

University:
University of California, San Diego
Course:
BIMM 100 | Molecular Biology
Academic year:

2025
Views:

147

Pages:

9
Author:

Aestherielle Seraphine

Great. Here is your SECOND HIGH-YIELD MCQ SET (35 items) covering the topics after your first quiz, namely: ✔️ Atrial Fibrillation (AF = Atrial Fibrillation) classification ✔️ AF management (rate, rhythm, anticoagulation) ✔️ Stroke prevention (CHA₂DS₂-VASc, HAS-BLED) ✔️ Cardioversion rules ✔️ Wide Complex Tachycardia (WCT = Wide Complex Tachycardia) ✔️ Ventricular Tachycardia (VT = Ventricular Tachycardia) vs SVT (Supraventricular Tachycardia) with aberrancy ✔️ WPW (Wolff–Parkinson–White) syndrome ✔️ ACLS (Advanced Cardiac Life Support) principles All abbreviations are explained. 📘 HIGH-YIELD ARRHYTHMIA MCQ QUIZ (35 ITEMS) 1. Atrial fibrillation lasting 4 days and terminating spontaneously is classified as: A. Persistent AF (Atrial Fibrillation) B. Paroxysmal AF C. Long-standing persistent AF D. Permanent AF Answer: B Rationale: Paroxysmal AF lasts <7 days and self-terminates. 2. A patient with AF (Atrial Fibrillation) and BP (Blood Pressure) 70/40 mmHg should first receive: A. Metoprolol B. Digoxin C. Electrical cardioversion D. Warfarin Answer: C Rationale: Unstable AF requires immediate synchronized cardioversion. 3. Which score estimates stroke risk in AF? A. HAS-BLED B. TIMI C. CHA₂DS₂-VASc D. GRACE Answer: C Rationale: CHA₂DS₂-VASc estimates thromboembolic risk. 4. A CHA₂DS₂-VASc score of 3 in a female patient indicates: A. No anticoagulation B. Aspirin only C. Strong indication for anticoagulation D. Observe only Answer: C Rationale: Women ≥3 have Class I indication. 5. Which drug is preferred for non-valvular AF anticoagulation? A. Warfarin B. Heparin C. DOAC (Direct Oral Anticoagulant) D. Aspirin Answer: C Rationale: DOACs are preferred in non-valvular AF. 6. A patient with mechanical mitral valve and AF should receive: A. Apixaban B. Rivaroxaban C. Warfarin D. Dabigatran Answer: C Rationale: Mechanical valves require warfarin. 7. Wide-complex tachycardia should be assumed to be: A. AVNRT B. SVT C. VT D. AF Answer: C Rationale: Treat as VT until proven otherwise. 8. AF with WPW (Wolff–Parkinson–White) syndrome is dangerous because: A. Causes bradycardia B. Leads to heart block C. May degenerate to VF (Ventricular Fibrillation) D. Causes hypotension only Answer: C Rationale: Rapid conduction via accessory pathway can cause VF. 9. A stable patient with regular monomorphic WCT may cautiously receive: A. Digoxin B. Adenosine C. Verapamil D. Warfarin Answer: B Rationale: Adenosine may be tried cautiously. 10. AF present continuously for 2 years is classified as: A. Paroxysmal B. Persistent C. Long-standing persistent D. Permanent Answer: C Rationale: >1 year continuous AF. 11. A major goal of AF management is: A. Increase BP B. Reduce QRS C. Prevent stroke D. Increase HR Answer: C Rationale: Stroke prevention is central. 12. A patient with AF and LVEF (Left Ventricular Ejection Fraction) 35% should avoid: A. Metoprolol B. Digoxin C. Diltiazem D. Amiodarone Answer: C Rationale: CCBs worsen systolic HF. 13. The main mechanism of VT after MI (Myocardial Infarction) is: A. Automaticity B. Reentry C. EAD D. DAD Answer: B Rationale: Scar-related reentry. 14. HAS-BLED score is used to: A. Predict stroke B. Predict bleeding risk C. Guide ablation D. Diagnose AF Answer: B Rationale: Estimates bleeding risk. 15. A high HAS-BLED score means: A. Stop anticoagulation B. Lower DOAC dose C. Correct risk factors D. Give aspirin Answer: C Rationale: Modify risks, do not withhold OAC. 16. Pulmonary vein isolation is mainly used for: A. VT B. AF C. AVNRT D. Flutter Answer: B Rationale: AF triggers originate in pulmonary veins. 17. A patient with AF for 24 hours and no risk factors may undergo cardioversion: A. Only after 3 weeks anticoagulation B. Immediately C. Never D. After ablation Answer: B Rationale: <48 hours, low risk. 18. In AF, thrombi most commonly form in the: A. RA (Right Atrium) B. LA appendage C. LV D. Aorta Answer: B Rationale: Stasis in left atrial appendage. 19. Which rhythm is most likely in a post-MI patient with wide regular tachycardia? A. AVRT B. AF C. VT D. MAT Answer: C Rationale: Scar VT common post-MI. 20. A 70-year-old man with HTN (Hypertension) and DM (Diabetes Mellitus) has AF. His CHA₂DS₂-VASc score is: A. 1 B. 2 C. 3 D. 4 Answer: C Rationale: Age 65–74 (1) + HTN (1) + DM (1) = 3. 21. First-line drug for rate control in stable AF is: A. Lidocaine B. Beta-blocker C. Procainamide D. Flecainide Answer: B Rationale: BBs are first-line. 22. Polymorphic VT with prolonged QT is treated with: A. Amiodarone B. Magnesium C. Adenosine D. Digoxin Answer: B Rationale: Magnesium treats torsades. 23. A delta wave indicates: A. AV block B. WPW C. VT D. MAT Answer: B Rationale: Delta wave = preexcitation. 24. “AF begets AF” means: A. AF causes MI B. AF worsens hypertension C. AF causes atrial remodeling D. AF causes VT Answer: C Rationale: AF promotes fibrosis and perpetuates itself. 25. Best long-term treatment for recurrent symptomatic AVNRT is: A. Digoxin B. Beta-blocker C. Ablation D. Aspirin Answer: C Rationale: Ablation is curative. 26. A patient with WCT and irregular rhythm most likely has: A. VT B. AF + BBB C. AVNRT D. Flutter Answer: B Rationale: AF with aberrancy = irregular wide. 27. CHA₂DS₂-VASc “V” stands for: A. Valve disease B. Ventricular hypertrophy C. Vascular disease D. Vasculitis Answer: C Rationale: V = Vascular disease. 28. Which drug is contraindicated in AF with WPW? A. Procainamide B. Amiodarone C. Verapamil D. Ibutilide Answer: C Rationale: AV blockers worsen conduction. 29. Primary goal of lenient rate control is HR < ? A. 80 bpm B. 90 bpm C. 100 bpm D. 110 bpm Answer: D Rationale: Lenient = <110 bpm. 30. The safest initial approach to unknown WCT is: A. Adenosine B. Verapamil C. Treat as VT D. Observe Answer: C Rationale: VT until proven otherwise. 31. Atrial enlargement in AF mainly affects treatment by: A. Increasing drug toxicity B. Reducing ablation success C. Lowering stroke risk D. Causing bradycardia Answer: B Rationale: Larger LA = poorer rhythm control. 32. Which arrhythmia most often arises from pulmonary veins? A. VT B. AVNRT C. AF D. Flutter Answer: C Rationale: PV triggers AF. 33. TOE before cardioversion is done to: A. Measure EF B. Detect thrombus C. Measure BP D. Diagnose MI Answer: B Rationale: Rule out LA clot. 34. A patient with CHA₂DS₂-VASc = 0 (male) needs: A. Warfarin B. DOAC C. Aspirin D. No anticoagulation Answer: D Rationale: Very low risk. 35. The most important complication of untreated AF is: A. Bradycardia B. Stroke C. Hypotension D. VT Answer: B Rationale: Thromboembolic stroke is main risk. ✅ FINAL STUDY TIP If you master: ✔️ AF classification ✔️ CHA₂DS₂-VASc ✔️ DOAC vs Warfarin ✔️ Wide vs Narrow tachycardia ✔️ VT vs SVT You are exam-ready for arrhythmias. Would you like me next to make: 📌 A mega 100-item exam simulation 📌 A 1-page ultra-review sheet 📌 A mock oral exam Which do you want?