title: [Diagnosis of perioperative myocardial infarction by cardiac troponin T following coronary artery bypass grafting].
abstract: The determinations of cardiac troponin T provide the highest diagnostic efficiency for the detection of myocardial cell necrosis. To assess perioperative myocardial infarction, serum levels of cardiac troponin T were determined in 14 patients undergoing coronary artery bypass grafting (CABG). The patients were divided into two groups: group I (n = 9), those whose troponin T was less than 1.00 ng/ml on the first postoperative day; group II (n = 5), those whose troponin T was more than 1.00 ng/ml on the first postoperative day. Troponin T levels in group II patients were significantly higher than in group I from the second to the seventh postoperative day. Two patients in group II had specific changes on the electrocardiogram detecting perioperative myocardial infarction as a new Q wave and R wave reduction. These results suggest that troponin T is a valuable marker of perioperative myocardial infarction following CABG.
authors.affiliation: Department of Cariovascular Surgery, Tokyo Women's Medical College, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Azuhata
authors.forename: K
authors.initials: K
authors.lastname: Suma
authors.forename: K
authors.initials: K
authors.lastname: Shiroma
authors.forename: K
authors.initials: K
authors.lastname: Mitsui
authors.forename: F
authors.initials: F
authors.lastname: Miyawaki
mesh_terms: D000328:Adult; D000368:Aged; D015415:Biomarkers / Q000097:blood; D001026:Coronary Artery Bypass; D005260:Female; D006801:Humans; D007431:Intraoperative Complications / Q000175:diagnosis*; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000175:diagnosis*; D009206:Myocardium / Q000378:metabolism*; D011237:Predictive Value of Tests; D014336:Troponin / Q000097:blood*; D020107:Troponin T
chemical_list: D015415:Biomarkers; D014336:Troponin; D020107:Troponin T