title: Electrocardiographic changes and their relation to serum enzyme activity after heart surgery.
abstract: In 80 patients who underwent heart surgery the incidence of electrocardiographic (ECG) changes after the operation was analysed. A precordial grid containing 24 leads and leads II, III and aVF was used. Electrocardiographic measurements were taken the day before the operation and again 5 days after the operation. New Q-waves were observed in 2 patients (2.5%) in the 24 precordial leads, in 2 patients in leads II, III and aVF, and in one patient in both precordial leads and leads II, III and aVF. New T-wave inversions were observed in 20 patients (25%) in the 24 precordial leads, in 5 patients (6%) in leads II, III and aVF, and in 3 patients in both precordial leads and leads II, III and aVF. A similar serum enzyme activity was observed both in patients developing Q-waves as well as T-wave inversions compared with cases in whom ECG changes did not appear.
mesh_terms: D000328:Adult; D000368:Aged; D001219:Aspartate Aminotransferases / Q000097:blood*; D001026:Coronary Artery Bypass; D004562:Electrocardiography; D005260:Female; D006350:Heart Valve Prosthesis; D006801:Humans; D007432:Intraoperative Period; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000175:diagnosis; D011184:Postoperative Period
chemical_list: D001219:Aspartate Aminotransferases