Efficiencies and Complications of Dual Chamber versus Single Chamber Implantable Cardioverter Defibrillators in Secondary Sudden Cardiac Death Prevention: A Meta-analysis.

Background: Dual chamber implantable cardioverter defibrillators (ICDs) are considered to have better clinical outcomes than single chamber ICDs, however, an individual trial may not have sufficient power to prove it. This meta-analysis aimed to compare clinical outcomes of dual chamber ICDs (DC-ICDs) with single chamber ICDs (SC-ICDs) in secondary sudden cardiac death (SCD) prevention.

Methods: We searched Medline, the Cochrane Library, and other internet sources, without language or date restrictions for articles comparing clinical outcomes between DC-ICDs and SC-ICDs.