(FIT)-Module 2 Workshop 3: SVT Mechanisms and Maneuvers-Stevenson Case 7 Answer

Video Transcription

Video Summary

The video discusses a case of supraventricular tachycardia, identifying it as atrial tachycardia. The observation includes a one-to-one pacing with an interval of 410 milliseconds, unaffected by a 380-millisecond pacing train, indicating AV dissociation without VA conduction. This rules out the use of an accessory pathway. Though AV nodal reentry is considered, the isoelectric P waves seen rule out this type due to inconsistent morphology with AV nodal reentry. The analysis of the conduction and P wave morphology leads to the conclusion that the tachycardia is atrial in origin.

Keywords

supraventricular tachycardia

atrial tachycardia

AV dissociation

P wave morphology

accessory pathway