subcutaneous ICD
Also written as: S-ICD
Defibrillator implanted under the skin without transvenous leads, requiring different editorial considerations for device descriptions.
Full Definition
A subcutaneous implantable cardioverter defibrillator (S-ICD) represents a newer approach to sudden cardiac death prevention that avoids the complications associated with transvenous lead systems. Unlike traditional ICDs that require leads threaded through blood vessels into the heart, S-ICDs are positioned entirely under the skin with the electrode placed along the left sternal border. This technology requires specific terminology in medical writing, particularly when distinguishing between conventional transvenous and subcutaneous systems in clinical documentation.
Usage
Usage note: Always specify 'subcutaneous' or use 'S-ICD' to distinguish from conventional ICDs; avoid 'leadless' which applies to different technology.
In Context
- "The subcutaneous ICD eliminated the risk of lead-related complications while maintaining effective arrhythmia termination." — Device comparison study
- "Patient selection criteria for subcutaneous ICD implantation differ from those for traditional transvenous systems." — Clinical guidelines