Cardiology

ECG/arrhythmia pattern — likely diagnosis

For each patient, select the single most likely diagnosis from the list of options. Each option may be used once, more than once, or not at all.

  1. A. Wolff-Parkinson-White syndrome
  2. B. Brugada syndrome
  3. C. Long QT syndrome
  4. D. Complete heart block
  5. E. Atrial fibrillation
  6. F. Ventricular tachycardia
  7. G. First-degree heart block
  8. H. Sick sinus syndrome

1. A young man has syncope during a febrile illness; ECG shows coved ST elevation in leads V1-V3.

2. A 70-year-old man has an irregularly irregular pulse with absent P waves on ECG.

3. A patient has a broad complex tachycardia with AV dissociation and occasional fusion beats on ECG.

4. An ECG shows complete dissociation between P waves and QRS complexes, with a regular, slow ventricular escape rhythm.

5. An elderly woman has alternating episodes of bradycardia and tachycardia on ambulatory ECG monitoring, with associated dizzy spells.

6. A teenager has a congenitally prolonged QTc and experiences syncope during swimming.