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

Video Transcription

Video Summary

The lecture discusses a wide QRS tachycardia with one-to-one AV conduction, identifying AV reentry as the mechanism. Exclusions include AV nodal reentry and ventricular tachycardia, based on post-pacing interval observations. The presence of an accessory pathway facilitates retrograde conduction through the AV node, characteristic of pre-excited tachycardia. Entrainment from the atrium shows ventricular response without changing QRS morphology, further implying AV reentry. Differences between antedromic AV reentry and ventricular tachycardia highlight distinct post-pacing interval characteristics. Atrial pacing helps distinguish these conditions, crucial for accurate diagnosis.

Keywords

Wide QRS tachycardia

AV reentry

Accessory pathway

Post-pacing interval

Atrial pacing