[Role of prolonged systolic phases in the diagnosis of mitral defects].
D004194:Disease; D004562:Electrocardiography; D006331:Heart Diseases; D006349:Heart Valve Diseases; D006801:Humans; D008943:Mitral Valve; D012214:Rheumatic Heart Disease; D013599:Systole
ELECTROCARDIOGRAPHY; MITRAL VALVE/diseases