Concordance of electrocardiographic and scintigraphic criteria of myocardial injury after cardiac surgery

摘要: The concordance of transmural electrocardiographic (ECG) changes and myocardial infarct imaging in detecting injury the perioperative period was evaluated 50 patients undergoing coronary artery bypass surgery 6 without disease valve replacement. Scintigraphy with technetium-99m (Sn) labeled pyrophosphate performed 3 to 7 days after surgery. Plasma creatine phosphokinase (CPK) levels were determined preoperatively daily for postoperatively. MB-CPK assayed fluorometrically samples obtained at 12 hour intervals 36 hours. Total CPK concentrations normal all but increased every patient A total 8 (16%) had evidence infarction. Six these (12%) exhibited abnormal images surgery, associated ECG each case. other 2 (4%) who among 4 developed bundle branch block operation. Abnormal did not occur any replacement despite elevations. These results indicate that elevations consistently cardiac cannot be relied upon detection Furthermore, new conduction defects may necessarily a sign infarction, useful means establishing infarction this group patients.