Analyses of Dynamic Beat‐to‐Beat QT–TQ Interval (ECG Restitution) Changes in Humans under Normal Sinus Rhythm and Prior to an Event of Torsades de Pointes during QT Prolongation Caused by Sotalol

摘要

Restitution through intracardiac pacing has been used to assess arrhythmia vulnerability. We examined whether analyses of sequential beat‐to‐beat QT and TQ interval measures can be used to quantify ECG restitution changes under normal sinus rhythm.