Table 1. Pros and Cons of Transvenous ICD vs. Subcutaneous ICD.

	Transvenous system	Subcutaneous system
Extraction	High risk	Low risk
Antitachycardia pacing	Available	Not available*
Backup pacing capabilities	Available	Not available*
Venous access requirements	Necessary	Not required
CRT capabilities	Available	Not available

*Antitachycardia pacing and back up pacing could become available with the combined Subcutaneous ICD and leadless system. ICD: implantable cardioverter defibrillators.