EP Fellows Curriculum: SVT with VA Dissociation-SVT with VA Dissociation

Video Transcription

Video Summary

The speaker in the video discusses different types of supraventricular tachycardia (SVT) and demonstrates how to differentiate between them using various diagnostic maneuvers. They present cases and examples of electrocardiograms (ECGs) to illustrate their points. The speaker emphasizes the importance of accurately diagnosing the type of SVT in order to provide appropriate treatment.<br /><br />One of the key points discussed is the importance of differentiating between AV nodal reentry tachycardia (AVNRT) and junctional tachycardia. They explain how giving either late premature atrial contractions (PACs) or early PACs can help distinguish between the two. The response to a late PAC can help identify whether the SVT is AVNRT or junctional tachycardia, with different responses indicating different diagnoses.<br /><br />Additionally, the speaker discusses the different types of SVT that can cause ventriculoatrial (VA) dissociation or VA block. They introduce the concept of concealed nodal ventricular tachycardia, which involves an accessory pathway integrated into the AV node. The speaker explains how specific diagnostic maneuvers, such as V on His or his overdrive pacing, can be used to identify this type of SVT.<br /><br />The video also covers mapping and ablation techniques for concealed nodal ventricular tachycardia, including the identification of specific potentials and targeting the proximal end of the pathway.<br /><br />Overall, the video provides a comprehensive overview of different types of SVT and demonstrates various diagnostic and treatment strategies to accurately identify and manage each type.

Keywords

supraventricular tachycardia

SVT

differentiation

diagnostic maneuvers

AV nodal reentry tachycardia

AVNRT

junctional tachycardia

premature atrial contractions

ventriculoatrial dissociation

concealed nodal ventricular tachycardia

ablation techniques