Session II: Invasive Diagnosis and Treatment-6154-Use of Overdrive Pacing-Entrainment in Supraventricular Tachycardia

Video Transcription

Video Summary

In this video, the lecturer discusses overdrive pacing during supraventricular tachycardia (SVT) and its diagnostic implications. Overdrive pacing is a technique used to assess and determine the mechanism of tachycardia, whether it is macro-reentry or a focal tachycardia. By pacing at a slightly faster rate than the tachycardia, the lecturer explains that if fusion occurs, it indicates an atrial macro-reentry or the presence of a focal automatic tachycardia. The lecturer also discusses entrainment, which is the technique in which the tachycardia is reset by pacing. Entrainment can aid in both diagnosis and treatment by defining the mechanism of tachycardia and validating ablation sites. The lecturer also emphasizes the importance of carefully interpreting the post-pacing interval and differentiating between fusion and pseudo-fusion. The lecturer provides examples and explains the potential pitfalls of overdrive pacing and entrainment. Overall, the video highlights the significance of overdrive pacing in diagnosing and treating different types of tachycardia and emphasizes the need for careful interpretation of the results.

Keywords

overdrive pacing

supraventricular tachycardia

SVT

diagnostic implications

macro-reentry

focal tachycardia

fusion

atrial macro-reentry

focal automatic tachycardia

entrainment