(FIT)-Module 3 Workshop 4: SVT and VT Invasive and Non-Invasive Correlation-Marchlinski Case 3 Answer

Video Transcription

Video Summary

The transcript explains that the right superior pulmonary vein shows entrance block but not exit block, evidenced by isolated firing from the vein that activates other multipolar catheters, indicating conduction out of the vein. Although adenosine can temporarily restore pulmonary vein (PV) conduction, no signs of its administration, such as slowed sinus rate or PR prolongation, are observed. The earliest activation site is the right superior pulmonary vein, not the superior vena cava (SVC). Additional slides confirm conduction from the vein, indicating no exit block and suggesting more work is needed to fully isolate the vein.

Keywords

right superior pulmonary vein

entrance block

exit block

pulmonary vein conduction

electrophysiology mapping