Arrhythmogenic Disorders · Pathology

Long QT syndrome primarily predisposes patients to which arrhythmia?

  1. Atrial fibrillation
  2. Sinus bradycardia
  3. Torsades de pointes
  4. First-degree heart block
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Correct answer: Torsades de pointes

Long QT syndrome prolongs ventricular repolarization, increasing the risk of torsades de pointes. This polymorphic ventricular tachycardia can degenerate into ventricular fibrillation.

Difficulty: Medium Question 3 of 20

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