Implantable cardioverter-defibrillator implantation for primary and secondary prevention: indications and outcomes

Area of Science:

• Pediatric Cardiology
• Electrophysiology
• Medical Device Technology

Background:

• Implantable cardioverter-defibrillators (ICDs) are crucial for preventing sudden cardiac death (SCD) in pediatric populations.
• There has been a notable shift towards primary prevention (prophylactic placement) over secondary prevention (post-event placement) in the last two decades.
• Understanding specific indications for ICDs in children is critical due to potential adverse effects.

Purpose of the Study:

• To review current indications for ICD implantation in children for both primary and secondary prevention of SCD.
• To analyze the risks and benefits associated with ICD implantation in pediatric patients.
• To support informed shared decision-making among healthcare providers, patients, and families regarding ICD therapy.

Main Methods:

• Comprehensive literature review of studies on pediatric ICD implantation.
• Analysis of trends in primary versus secondary prevention strategies.
• Evaluation of reported adverse events and hardware-related complications.

Main Results:

• ICDs are effective in reducing SCD rates in children.
• Primary prevention indications are increasingly utilized, though require careful risk assessment.
• High rates of adverse effects, including inappropriate shocks and re-interventions, are associated with ICDs, particularly in cases with marginal indications.

Conclusions:

• ICD implantation indications in children are diverse and depend on underlying cardiac pathology.
• Careful consideration of risks versus benefits is essential for optimizing patient outcomes.
• Enhanced shared decision-making is vital for appropriate ICD use in pediatric SCD prevention.