Objective To analyze frequent discharge events among 6 patients with implantable cardioverter defibrillator( ICD). Method Since 2008,42 patients were implanted ICD,clinic materials of 6 cases with frequent discharge events were reviewed and analyzed. Results ①General materials: 34 patients were followed up,6 cases( 3 males) had been subjected frequent discharge events( the incidence was 14. 3%),aged from 38 to 67 years,included 2 CRT-D for dilated cardiomyopathy with VT /VF,1 single chamber ICD for long Q-T...