Session III: Invasive Diagnosis and Treatment-6155-Ventricular Tachycardia- Ischemic and Nonischemic Cardiomyopathy and other Unique VT Syndromes

Ventricular Tachycardia- Ischemic and Nonischemic Cardiomyopathy and other Unique VT Syndromes

Video Transcription

Video Summary

The video provides an overview of different types of cardiac arrhythmias and their characteristics. It discusses the triggers and substrates of polymorphic VT/VF syndromes, highlighting the distinction between idiopathic and post-MI in surviving Purkinje fibers triggers. The video explains that intracardiac echo is often used to confirm catheter positioning on the structures responsible for these triggers. The elimination of VF substrate is also discussed, with a focus on Brugada syndrome and J-wave syndromes. The targeted regions for ablation in these cases are identified as the RV outflow tract, free wall disrupted myocardium, and epicardial inferior basal and lateral regions. Bundle branch re-entry is explained, emphasizing that these arrhythmias involve the conduction system and are driven by the Purkinje system. Idiopathic outflow tract VTs are categorized as focal or triggered arrhythmias, often occurring without significant structural disease, and the importance of ECG in identifying their origin is stressed. Lastly, idiopathic LV VTs, specifically fascicular tachycardias, are discussed, and mapping and ablation techniques are mentioned as effective treatment options. Overall, the video provides a comprehensive overview of various cardiac arrhythmias, their triggers, substrates, and treatment approaches.

Keywords

cardiac arrhythmias

polymorphic VT/VF syndromes

idiopathic triggers

post-MI triggers

surviving Purkinje fibers

intracardiac echo

catheter positioning

VF substrate elimination

Brugada syndrome

J-wave syndromes

ablation

bundle branch re-entry