Cardiovascular: MI, Heart Failure, Arrhythmias · USMLE Step 1

A man collapses during exercise. ECG shows a delta wave and short PR interval. Which condition is most likely?

  1. Brugada syndrome
  2. AV nodal reentrant tachycardia
  3. Wolff–Parkinson–White syndrome
  4. Sick sinus syndrome
Show answer and explanation

Correct answer: Wolff–Parkinson–White syndrome

WPW syndrome involves an accessory pathway (Bundle of Kent) causing a delta wave and predisposition to tachyarrhythmias.

Difficulty: Medium Question 15 of 20

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