Method
Study site: This is a retrospective analysis of all patients who underwent CSD at a tertiary hospitalfrom January 2010 to June 2019.
Data compilation: Data was collected from all patients during their index hospitalization, out-patient visit charts, telephonic conversation, hospital records, telemetry and ICD interrogation details (wherever available). Apart from patient demographics, the type of ventricular arrhythmia, etiology of ventricular arrhythmia, medication details, thoracic epidural anesthesia (TEA), immediate peri-CSD outcomes, procedural complications and follow-up data were noted. In case the patients did not come for follow-up, they were contacted telephonically at regular intervals.