title: Signal-averaging electrocardiogram in patients with diabetes mellitus.
abstract: In order to detect silent impairment of the heart due to diabetes mellitus, the signal-averaging electrocardiograms (ECG) of 21 healthy subjects and 22 diabetic patients without ventricular tachycardia were compared. The QRS duration in the signal-averaging ECG was longer in diabetic patients than in the normal subjects (87.3 ms vs. 114.5 ms, p less than 0.01). Moreover, late potentials in the terminal portion of the QRS complex were observed in 7 diabetic patients (32%), but in only one normal subject (5%, p less than 0.01). These findings suggested that patients with diabetes mellitus frequently have intraventricular conduction disturbances, presumably due to diabetic microangiopathy.
authors.affiliation: Second Department of Internal Medicine, School of Medicine, University of Tokushima, Japan.
authors.forename: Q
authors.initials: Q
authors.lastname: Yang
authors.forename: K
authors.initials: K
authors.lastname: Kiyoshige
authors.forename: T
authors.initials: T
authors.lastname: Fujimoto
authors.forename: M
authors.initials: M
authors.lastname: Katayama
authors.forename: K
authors.initials: K
authors.lastname: Fujino
authors.forename: K
authors.initials: K
authors.lastname: Saito
authors.forename: Y
authors.initials: Y
authors.lastname: Nakaya
authors.forename: H
authors.initials: H
authors.lastname: Mori
mesh_terms: D000328:Adult; D000368:Aged; D003924:Diabetes Mellitus, Type 2 / Q000503:physiopathology*; D003925:Diabetic Angiopathies / Q000503:physiopathology; D004562:Electrocardiography; D005260:Female; D006329:Heart Conduction System / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged