[Relation between cardiomyopathy and ventricular arrhythmias].
Ventricular arrhythmias (VA) with its relevant factors were studied in patients with cardiomyopathy and the relation between late potential (LP) and ventricular tachycardia (VT) was also evaluated. It is shown that the prevalence of VA was high in cardiomyopathy. However, its severity was not related to clinical symptoms, cardiac enlargement, cardiac function and level of plasma electrolytes. The relative risk and relative odds of LP positive were 7.33 and 20 times as high in patients with VT as in those without VT, respectively. The sensitivity, specificity, and accuracy of prediction to VT in LP positive patients were 66.2%, 90.9% and 80%, respectively. The patients with sustained VT and positive LP were more susceptible to sudden death. LP was useful to understand the mechanism and prognosis of VT.
Zhu
S J
SJ
Cardiology Division, Xinqiao Hospital, Third Military Medical College.
Li
Z Y
ZY
Liu
F G
FG
D000293:Adolescent; D000368:Aged; D005117:Cardiac Complexes, Premature / Q000209:etiology; D009202:Cardiomyopathies / Q000150:complications*; D002648:Child; D003645:Death, Sudden / Q000209:etiology; D004562:Electrocardiography / Q000379:methods; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012307:Risk Factors; D013610:Tachycardia / Q000209:etiology*