Safety and Efficacy of Subcutaneous Cardioverter Defibrillator in Patients at High Risk of Sudden Cardiac Death　― Primary Japanese Experience ―

Abstract

S-ICD is a safe and effective alternative to conventional TV-ICD. The long-term safety and efficacy of the S-ICD need further investigation.

A novel screening test for inappropriate shocks due to myopotentials from the subcutaneous implantable cardioverter–defibrillator

“…In contrast, we only used signals classified as sensed ("S" marker) that would result in device shocks. Given the much lower rates of IAS due to MPI noted in the present study and in previous reports, [11][12][13][14] the specificity of this test likely is very low.…”

“…We previously reported that the incidence of IAS due to MPI was 5%. 13 Interestingly, Theuns et al 9 reported fewer IAS events due to noncardiac oversensing with SMART Pass. However, the cause of IAS was not provided in their study.…”

Effects and Complications of Subcutaneous Implantable Cardioverter-Defibrillator in the Prevention of Sudden Cardiac Death: A Narrative Review

“…Only one patient experienced an adequate shock during follow-up. Therefore, the S-ICD system’s defibrillation efficacy was confirmed by the success rate of defibrillation tests [ 15 ]. Implantation of the S-ICD intramuscularly could be long-lasting, is safe concerning infection, and is the best alternative to the standard subcutaneous placement [ 16 ].…”

Postoperative intravenous patient‐controlled analgesia improves pain management after subcutaneous implantable defibrillator implantation

“…Implantable cardioverter defibrillators (ICD), encompassing both transvenous (TV‐ICD) and subcutaneous types (S‐ICD), act as a safeguard against life‐threatening ventricular tachyarrhythmias. S‐ICD has proven advantageous for certain patients, such as those at an elevated risk of ICD infection and those who do not necessitate pacing, and are widely used worldwide, including Japan 1–4 . Postoperative pain is a distinctive challenge associated with S‐ICD implantation which can sometimes be severe and significantly influences the quality of the patient journey 5 .…”

“…S-ICD has proven advantageous for certain patients, such as those at an elevated risk of ICD infection and those who do not necessitate pacing, and are widely used worldwide, including Japan. [1][2][3][4] Postoperative pain is a distinctive challenge associated with S-ICD implantation which can sometimes be severe and significantly influences the quality of the patient journey. 5 The substantial pain is arguably due to the larger size of the device and the pocket required for it.…”