ICD
Also written as: ICD — implantable cardioverter defibrillator
Implantable cardioverter defibrillator - a device that monitors heart rhythm and delivers therapy for life-threatening arrhythmias.
Full Definition
An implantable cardioverter defibrillator (ICD) is a sophisticated cardiac device that continuously monitors heart rhythm and automatically delivers electrical therapy when life-threatening ventricular arrhythmias are detected. ICDs can provide antitachycardia pacing, cardioversion, and defibrillation as needed. Modern devices often include cardiac resynchronization therapy (CRT) capabilities and advanced algorithms to minimize inappropriate shocks. ICD implantation is indicated for primary or secondary prevention of sudden cardiac death in patients with reduced ejection fraction or high-risk arrhythmias.
Usage
Usage note: AICD (automatic ICD) is outdated terminology; use ICD in contemporary writing.
In Context
- "The patient's ICD fired appropriately, terminating sustained ventricular tachycardia." — Device clinic note
- "ICD implantation was recommended for primary prevention given the patient's low ejection fraction." — Consultation report