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A narrow wide-complex surprise.

Anthony H Kashou1, Nicholas Y Tan1, Gurukripa N Kowlgi1

  • 1Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN, United States.

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Summary
This summary is machine-generated.

This study details a case of recurrent palpitations caused by atriofascicular (Mahaim) tachycardia. It reviews Mahaim pathway physiology, diagnosis, and ablation strategies for this uncommon arrhythmia.

Keywords:
Atriofascicular pathwayDecremental accessory pathwayECG interpretationM potentialMahaim tachycardiaWide complex tachycardia

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Area of Science:

  • Cardiology
  • Electrophysiology
  • Cardiac Arrhythmias

Background:

  • Atriofascicular (Mahaim) tachycardia is a rare supraventricular tachycardia.
  • Recurrent palpitations can be a symptom of underlying cardiac arrhythmias.

Purpose of the Study:

  • To present a case of Mahaim tachycardia.
  • To review the physiology, diagnosis, and ablation of Mahaim pathway tachycardia.

Main Methods:

  • Case presentation of a 65-year-old woman with recurrent palpitations.
  • Review of Mahaim pathway physiology, embryologic basis, ECG features, and electrophysiologic study findings.

Main Results:

  • The patient presented with wide complex tachycardia consistent with Mahaim tachycardia.
  • Key diagnostic features and ablation strategies were identified.

Conclusions:

  • Mahaim pathway tachycardia requires specific diagnostic criteria.
  • Electrophysiologic study is crucial for guiding successful ablation strategies.