RR interval variability in the evaluation of ventricular tachycardia and effects of implantable cardioverter defibrillator therapy.

ABSTRACT:

Background

An implantable cardioverter defibrillator (ICD) is the most reliable therapeutic device for preventing sudden cardiac death in patients with sustained ventricular tachycardia (VT). Regarding its effectiveness, targeted VT is defined based on the tachyarrhythmia cycle length. However, variations in RR interval variability of VTs may occur. Few studies have reported on VT characteristics and effects of ICD therapy according to the RR interval variability. We aimed to identify the clinical characteristics of VTs and ICD therapy effects according to the RR interval variability.

Methods

We analyzed 821 VT episodes in 69 patients with ICDs or cardiac resynchronization therapy defibrillators. VTs were classified as irregular when the difference between two successive bea

SUBMITTER: Tsukahara K 

PROVIDER: S-EPMC8339111 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature