Zhou Y, Zhao S, Chen K, et al. - Researchers compared primary prevention (PP) patients following the first appropriate implantable cardioverter-defibrillator (ICD) therapy and secondary prevention (SP) patients in terms of the incidence rate and risk of subsequent ventricular arrhythmia (VA) and all-cause mortality. For this purpose, they retrospectively examined clinical features and follow-up data acquired from 835 ICD patients, including 364 SP patients and 471 PP patients, with home monitoring feature. The participants were observed over a mean follow-up period of 44.72 ± 20.87 months, during which, appropriate ICD therapy was received by 210 (44.59%) PP patients. Findings revealed more proneness to VA recurrence and death in PP patients once they undergo appropriate ICD therapy, compared with SP patients.