ventricular tachyarrhythmia

Full Definition

Ventricular tachyarrhythmias are rapid, irregular heart rhythms that originate from the ventricular chambers, including ventricular tachycardia (VT) and ventricular fibrillation (VF). These potentially life-threatening arrhythmias are the primary indication for ICD implantation, as they can lead to sudden cardiac death if not promptly terminated. ICDs continuously monitor for these arrhythmias using rate and morphology algorithms, delivering appropriate therapies ranging from antitachycardia pacing to high-energy shocks when detected.

Usage

Usage note: Often abbreviated as VTA in clinical documentation; ensure proper hyphenation.

In Context

• "The device successfully terminated the ventricular tachyarrhythmia with antitachycardia pacing." — ICD therapy episode report
• "Programming was optimized to enhance detection of ventricular tachyarrhythmias while minimizing inappropriate therapy." — Device optimization note