EP Edge Journal Watch HRS Collaborative Episode July 2026: CT-Guided VT Ablation, LAA Closure, AF Screening, Alcohol and AF Risk-Podcast Transcript EP Edge July 2026

Podcast Transcript EP Edge July 2026

Pdf Summary

This transcript is a monthly Heart Rhythm Society and EP Edge wrap-up reviewing recent electrophysiology studies. Dr. Niraj Sharma highlights two randomized trials and several rapid-fire research items.

First, the <strong>InEurHeart trial</strong> compared <strong>CT-guided catheter ablation</strong> versus conventional VT ablation in patients with ischemic cardiomyopathy and significant ventricular tachycardia. Using CT images and proprietary inHEART software for anatomical segmentation, the CT-guided approach skipped high-density electroanatomic mapping in many cases. This reduced procedure time substantially, mainly by eliminating mapping, while <strong>clinical outcomes were similar</strong> to conventional ablation. However, about 25% still had inducible VT and required conventional fallback. The hosts note that this approach may be most useful for hemodynamically unstable patients, but applicability is limited to ischemic VT and the trial had some financial conflicts.

Second, the <strong>OPINION trial</strong> studied whether adding <strong>left atrial appendage exclusion during valve surgery</strong> benefits patients without known atrial fibrillation but with structural risk factors. In more than 2,000 patients, mostly with mechanical valves and many on lifelong warfarin, the study found <strong>no reduction in ischemic stroke</strong>. The presenters conclude that routine appendage removal in patients without AF remains <strong>inconclusive</strong>, and larger trials such as <strong>LEAPS</strong> may provide clearer answers.

In rapid fire, a translational study on <strong>caveolae in the sinus node</strong> suggests that microstructural disruption of membrane “clocks” may contribute to sinus node dysfunction. A large meta-analysis on <strong>alcohol and incident AF</strong> found a <strong>J-shaped relationship</strong>, with low levels potentially neutral or even protective, but higher intake clearly increasing AF risk; however, confounding likely affects the results. Finally, a simple <strong>pulse self-check education intervention</strong> nearly doubled AF detection in high-risk patients, suggesting a low-cost screening strategy with potential global usefulness.

Keywords

electrophysiology

ventricular tachycardia

catheter ablation

CT-guided ablation

ischemic cardiomyopathy

left atrial appendage

atrial fibrillation

sinus node dysfunction

alcohol and AF

AF screening