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Related Experiment Video

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Implantation of the Syncardia Total Artificial Heart

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Published on: July 18, 2014

Multiple interatrial electrical connection after heart transplantation.

Pablo Peñafiel-Verdú¹, Mariela Salar-Alcaraz, Asunción Fernández-Fernández

¹University Hospital Virgen de la Arrixaca, Murcia, Spain. pablopenafielv@yahoo.es

Pacing and Clinical Electrophysiology : PACE

|February 2, 2011

Summary

A heart transplant recipient experienced atrial tachycardia due to multiple conduction pathways. Ablation successfully targeted three distinct connections, resolving the arrhythmia.

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Area of Science:

Cardiology
Electrophysiology
Cardiac Surgery

Background:

Post-heart transplantation atrial tachycardia is a known complication.
Identifying the arrhythmogenic substrate in complex cardiac anatomies can be challenging.

Observation:

A 62-year-old heart transplant recipient presented with regular atrial tachycardia 6 years post-transplant.
Electrophysiologic evaluation revealed an atrial arrhythmia with 2:1 conduction from the recipient to the donor atrium.
Initial electroanatomical mapping was confusing, suggesting alternant conduction through multiple breakthroughs.

Findings:

The electroanatomical map was divided into two concordant maps, identifying two successful ablation sites.
A third distinct arrhythmogenic connection was subsequently detected and successfully ablated.
This approach resolved the complex atrial tachycardia in the heart transplant recipient.

Implications:

This case highlights the potential for multiple arrhythmogenic pathways after heart transplantation.
Advanced electrophysiological mapping techniques are crucial for diagnosing and treating complex arrhythmias in transplant patients.
Successful ablation of multiple connections can restore sinus rhythm and improve outcomes in heart transplant recipients.