Fate of explanted ICD patients

Area of Science:

• Cardiology
• Electrophysiology
• Medical Device Technology

Background:

• Automatic implantable cardioverter-defibrillators (AICDs) are crucial for managing life-threatening ventricular arrhythmias.
• Understanding outcomes after AICD explantation is important for patient management.
• Reasons for explantation vary, including device-related issues and patient-specific factors.

Purpose of the Study:

• To analyze the outcomes of patients who had their AICDs explanted without replacement.
• To identify reasons for AICD explantation and non-reimplantation.
• To assess the risk of sudden cardiac death after AICD discontinuation.

Main Methods:

• Retrospective analysis of eight patients who underwent AICD explantation.
• Review of patient demographics, presenting arrhythmias, and reasons for explantation.
• Assessment of follow-up duration, causes of death, and alternative therapies.

Main Results:

• Common explantation reasons included infection (5/8) and lead fracture (1/8).
• Non-reimplantation was due to patient refusal (3/8), physician discretion (2/8), or transplantation (1/8).
• Of the five patients not receiving alternate therapies, none died of cardiac causes post-explantation.

Conclusions:

• Preoperative factors did not predict lower arrhythmic event risk compared to general AICD patients.
• AICD therapy cessation for ventricular arrhythmias does not necessarily lead to imminent sudden cardiac death.
• Alternative therapies or watchful waiting appear safe for select patients after AICD explantation.