Evaluating Temperature Gradients Across the Posterior Left Atrium with Radiofrequency Ablation.

Both SA and HPSD ablation strategies resulted in markedly higher temperatures measured at the anterior wall of the esophagus compared to the esophageal lumen, raising concern about the value of clinical intraluminal temperature monitoring. The temperature rise at the anterior wall was lower with HPSD. Significant time delay was seen to reach maximum measured temperature and a modest increase in distance between site of ablation and thermistor location impacted accuracy of monitored temperatures. This article is protected by copyright. All rights reserved.