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Updated: Jul 6, 2026

Cooling or Warming the Esophagus to Reduce Esophageal Injury During Left Atrial Ablation in the Treatment of Atrial Fibrillation

Cooling or Warming the Esophagus to Reduce Esophageal Injury During Left Atrial Ablation in the Treatment of Atrial Fibrillation

Published on: March 15, 2020

A new system for right atrial cooling.

Marinus A J M Huybregts¹, Roel de Vroege, Wim van Oeveren

¹Department of Cardiac Surgery, University Hospital Vrije Universiteit, Amsterdam, The Netherlands. majm.huybregts@vumc.nl

The Annals of Thoracic Surgery

|March 22, 2008

Summary

This summary is machine-generated.

Controlled right atrial cooling using a novel device significantly reduced postoperative atrial fibrillation in patients undergoing coronary artery bypass grafting. This method protected the atrium and minimized arrhythmias.

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Area of Science:

Cardiovascular Surgery
Cardiac Electrophysiology
Medical Device Innovation

Background:

Postoperative atrial fibrillation (POAF) is a common complication after on-pump coronary artery bypass grafting (CABG).
Previous studies suggest controlled hypothermia of the right atrium can reduce POAF incidence.
A novel device has been developed for targeted right atrial and nodal cooling.

Purpose of the Study:

To evaluate the efficacy of a new atrial cooling device in reducing POAF after CABG.
To assess the safety and effectiveness of localized hypothermia in protecting the right atrium during cardiac surgery.

Main Methods:

The study involved 41 patients undergoing elective CABG using the atrial cooling device.
Systemic temperatures were maintained at 36°C, while atrial temperatures were lowered to 19-20°C for 30 minutes.
The device facilitated right atrial isolation and collection of cardioplegia, reducing hemodilution.

Main Results:

Effective suppression of electrical activity in the right atrium was achieved during aortic cross-clamping.
Cardiac electrical activity returned in all patients post-procedure without sustained arrhythmias.
Only 3 out of 38 patients (7.9%) developed postoperative atrial fibrillation.

Conclusions:

Local atrial cooling is a promising strategy for protecting the right atrium during CABG.
This technique may significantly decrease the incidence of transient postoperative atrial fibrillation.
The developed device offers a safe and effective method for targeted atrial hypothermia.