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Related Experiment Videos

Transesophageal cardioversion

P P McKeown1, S Croal, J D Allen

  • 1Regional Medical Cardiology Centre, Royal Victoria Hospital, Belfast, Northern Ireland.

American Heart Journal
|February 1, 1993
PubMed
Summary
This summary is machine-generated.

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A novel esophageal electrode system enables effective low-energy cardioversion for various tachyarrhythmias, including atrial fibrillation. This transesophageal approach offers a promising alternative for electrical cardioversion, achieving high success rates with reduced energy.

Area of Science:

  • Cardiology
  • Medical Devices

Background:

  • Electrical cardioversion is a standard treatment for tachyarrhythmias.
  • Transthoracic cardioversion often requires high energy levels and can be painful.
  • Transesophageal cardioversion offers a potential alternative with lower energy requirements.

Purpose of the Study:

  • To evaluate the efficacy and safety of a novel quadripolar esophageal electrode system for transesophageal cardioversion.
  • To compare transesophageal impedance with transthoracic impedance.
  • To determine the success rates of transesophageal cardioversion for different tachyarrhythmias.

Main Methods:

  • 131 transesophageal cardioversions were performed in 105 patients using a quadripolar esophageal electrode system.
  • Arrhythmias treated included atrial fibrillation, atrial flutter, supraventricular tachycardia, and ventricular tachycardia.

Related Experiment Videos

  • Transthoracic countershock was used as a rescue therapy when transesophageal cardioversion was unsuccessful.

    • Main Results:

    • Mean transesophageal impedance was significantly lower than transthoracic impedance (52.6 vs. 63.1 omega, p < 0.01).
    • Successful transesophageal cardioversion for atrial fibrillation was achieved in 79.5% of patients (mean energy 63.1 J).
    • All episodes of atrial flutter, supraventricular tachycardia, and ventricular tachycardia were successfully terminated.

    Conclusions:

    • The novel esophageal electrode system facilitates low-energy transesophageal cardioversion for atrial and ventricular tachyarrhythmias.
    • This method demonstrates a high overall success rate, especially when combined with transthoracic countershock.
    • Transesophageal cardioversion is a safe and effective alternative for electrical treatment of tachyarrhythmias.