Subcutaneous ICD: Current standards and future perspective.

Area of Science:

• Cardiology
• Medical Devices
• Electrophysiology

Background:

• The subcutaneous implantable cardioverter-defibrillator (S-ICD) system is an established therapy for sudden cardiac death (SCD) prevention.
• It serves as an alternative to transvenous implantable cardioverter-defibrillator (ICD) systems in selected patients.
• The S-ICD has undergone development since its introduction in 2010, offering unique extracardiac implantation.

Purpose of the Study:

• To review recent developments and literature on the S-ICD system.
• To evaluate the S-ICD's efficacy and safety compared to conventional ICDs.
• To discuss the expanding role and future potential of S-ICD therapy.

Main Methods:

• Review of clinical studies and large registries.
• Analysis of S-ICD performance in detecting and terminating ventricular arrhythmias.
• Examination of guideline recommendations (ESC, AHA) for S-ICD use.

Main Results:

• S-ICD reduces perioperative and long-term complications associated with transvenous ICDs.
• Clinical studies provide evidence for effective arrhythmia detection and termination.
• S-ICD is recommended in guidelines for specific patient groups, including those with complex anatomy or high infection risk.

Conclusions:

• The S-ICD is a viable alternative to transvenous ICDs, particularly for patients with complex anatomy or contraindications to endovascular leads.
• Its effectiveness in treating ventricular arrhythmias is well-established.
• Future developments may overcome current limitations, such as the lack of pacing capabilities.