The significance of U wave polarity in patients with a prior anterior myocardial infarction

The significance of the polarity of U waves in left precordial leads in patients with a prior anterior myocardial infarction was evaluated in relation to left ventricular function and wall motion by left ventriculography. Ninety-six such patients, with a mean age of 53 years, were divided into three...

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Bibliographic Details
Published in:European heart journal 1990-07, Vol.11 (7), p.634-642
Main Authors: KANEMOTO, N., HOSOKAWA, J., IMAOKA, C.
Format: Article
Language:English
Subjects:
Adult
Aged
anterior myocardial infarction
apical infarction
Cineangiography
Coronary Angiography
Electrocardiography
Female
global ejection fraction
Heart Ventricles - diagnostic imaging
Humans
Image Processing, Computer-Assisted
Male
Middle Aged
Myocardial Contraction - physiology
Myocardial Infarction - diagnosis
Myocardial Infarction - physiopathology
negative U wave
Polarity of U wave
Stroke Volume - physiology
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Summary:The significance of the polarity of U waves in left precordial leads in patients with a prior anterior myocardial infarction was evaluated in relation to left ventricular function and wall motion by left ventriculography. Ninety-six such patients, with a mean age of 53 years, were divided into three groups according to the polarity ofU waves: positive U waves (group P), isoelectric or flat U waves (group F), and negative U waves (group N). The following parameters were analysed: (I) Selvester ECG score; (2) global ejection fraction (EF); (3) regional area change; (4) number of asynergic and akinetic segment al radii; (5) asynergic and akinetic areas. Fifteen patients served as controls. The Selvester ECG scores increased progressively and EF decreased successively with statistically significant differences between groups P, F, and N (P
ISSN:0195-668X
1522-9645
DOI:10.1093/oxfordjournals.eurheartj.a059769