**Prospective Cohort
🌟PFZ predicted the main DZ targets in 9/10 pts.

Colocalization of PFZs with DZs
*Retrospective Cohort
- High PF (>220 Hz) within low-voltage (<1.5 mV) or PFZs colocalized with DZ in all pts, defined as >50% surface area overlap

A. Voltage map
B. ILAM
C. PFZ >-220 Hz superimposed upon voltage map
D. VT Activation map

⭐️Findings –
*⃣ Low voltage areas w LP and LAVA had a higher median PF of 358 Hz c/w scar only (156 Hz).
*⃣*⃣ROC analysis revealed an optimal threshold of 216.5 Hz with 92.5% sensitivity & 85.4% specificity.
*⃣*⃣*⃣ Peak Frequency (PF) cutoff >=220 Hz ➡️ 91% sensitivity & 85% specificity for LAVA and LP

Results:
*25 pts (after exclusion) – 72% ischemic

Description of Algorithm

*Proprietary - EnSite OT Near Field™
** Automatically measures & annotates the highest PF associated with intracardiac EGMs
*** To discriminate near-field vs. far-field components

For all #EPeeps
🧑‍🎓 In the next few weeks, I will be posting on the 10 top-cited Heart Rhythm articles of 2024.

1⃣ Let's start with an excellent practical approach to VT ablation by my former co-fellow Jeff Winterfield & my former fellow Josh Payne

First attempt at Bachman's Bundle pacing. An old dog trying to learn new tricks. Suggestions and criticisms welcome. #epeeps @heartrhythmsociety.bsky.social @mgkatz036.bsky.social @aalahmadmd.bsky.social @wsauer.bsky.social