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Electrocardiogram single-lead multifocal atrial tachycardia

Electrocardiogram single-lead multifocal atrial tachycardia
Clinical features:
  • Elderly patients
  • Decompensation of pulmonary disease
  • Postoperative
  • Arrhythmia usually does not cause severe hemodynamic compromise
  • High mortality
ECG features:
  • P waves have ≥3 forms
  • Atrial rate is usually 100 to 200 bpm
  • Atrial rate is irregular
  • PR interval varies
  • Isoelectric baseline between P waves
  • May progress to atrial fibrillation
ECG: electrocardiogram; bpm: beats per minute.
Courtesy of Alfred Buxton, MD.
Graphic 127222 Version 1.0