(FIT)-Module 3 Workshop 5: Invasive and Non-Invasive Correlation-Marchlinski Case 2 Answer

Video Transcription

Video Summary

The video's transcript explains the identification of a non-pulmonary vein trigger in the heart, based on ECG and intracardiac electrogram recordings. The origin was located at the superior posterior left atrial wall between isolated pulmonary veins, evidenced by an inferiorly directed P wave positive across the pericardium. Simultaneous activation was observed in the coronary sinus and right atrium catheters. This contrasts with triggers from the superior vena cava or inferior sites, which would show different activation patterns. The trigger was isolated by mapping and connecting to the pulmonary veins, with examples contrasting SVC triggers demonstrating distinct activation sequences.

Keywords

non-pulmonary vein trigger

ECG

intracardiac electrogram

left atrial wall

pulmonary vein isolation