(FIT)-Module 2 Workshop 3: SVT Mechanisms and Maneuvers-Miller Case 3 Answer

Video Transcription

Video Summary

The video explains a medical analysis of orthodromic reentry using a left free wall pathway, identified by studying VA intervals and QRS complexes. The patient exhibits a left bundle branch block, seen in the surface VA intervals and narrow QRS complexes. The variation in VA intervals—300 milliseconds for left bundle and 250 milliseconds for narrower QRS and right bundle—indicates participation of the left ventricle in the reentry circuit, signifying a left-sided concealed accessory pathway. The prolongation of the surface VA interval during the left bundle branch block suggests the presence of an ipsilateral accessory pathway involved in orthodromic reentry.

Keywords

orthodromic reentry

left free wall pathway

VA intervals

QRS complexes

left bundle branch block