Risk factor stratification of sudden death in idiopathic cardiomyopathy

W. Jiang, K. Wang, T. Lu

Research output: Contribution to journalArticle

Abstract

In 178 patients with idopathic cardiomyopathy, the risk factor stratifications of sudden death (SD) were analysed. Among them, 19 cases died suddenly. 55.2% (16/29) of patients with SD had a history of recurrent sustained ventricular tachycardia (S-VT). The incidence of SD in the patients with recurrent non-sustained ventricular tachycardia (nonS-VT) was 5.36% (3/56). Programmed electrical stimulation (PES) was performed in 39 patients with ventricular tachyarrhythmias (VT), 19 patients had inducible S-VT, SD occurred in 10 patients (52.6%). S-VTs were not induced in 20 patients, SD occurred in only 2 patients (10%). Signal-averaged ECG (SAECG) was studied in 33 patients with VT. The late potenitials (LPs) were demonstrated in 15 cases, in which 8 cases suffered SD (53.3%). The SAECG was normal in 18 cases, SD occurred in only 3 cases (16.6%). The right ventricular out-flow tract studied by echocardiogram was greater in SD group than in non-SD group. This study has demonstrated that S-VT occurred spontaneouly or induced by PES, positive LPs and RV dilation may predict the risk to arrhythmogenic SD in patients with idiopathic cardiomyopathy.

Original languageEnglish (US)
Pages (from-to)363-364+394+395
JournalChinese Journal of Cardiology
Volume22
Issue number5
StatePublished - Dec 1 1994

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

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