[Sinoauricular block occurring in connection with effort ECG in cardiac patients].
D004562:Electrocardiography; D006327:Heart Block; D006801:Humans; D009393:Nephritis; D012213:Rheumatic Fever; D012214:Rheumatic Heart Disease; D012848:Sinoatrial Block
ELECTROCARDIOGRAPHY; HEART BLOCK; NEPHRITIS; RHEUMATIC FEVER; RHEUMATIC HEART DISEASE