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Perioperative Myocardial Infarction Diagnosis After Coronary Artery Bypass Grafting Surgery Using Coupled Electrocardiographic Changes and Cardiac Troponin I Publisher



Shahzamani A1 ; Sheikhbahaei E2 ; Shahabi S3 ; Shahzamani M4 ; Hemasian H5 ; Hadi N1 ; Zamani S1
Authors
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Authors Affiliations
  1. 1. School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
  2. 2. Cardiovascular Research Institute, Student Research Committee, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
  3. 3. Department of Surgery, Laparoscopic Surgery Fellowship, Alzahra University Hospital, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
  4. 4. Department of Surgery, Chamran Heart Center and University Hospital, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
  5. 5. Alzahra University Hospital, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran

Source: Indian Journal of Thoracic and Cardiovascular Surgery Published:2019


Abstract

Purpose: Perioperative myocardial infarction (PMI) is one of the most common causes of prolonged intensive care unit (ICU) and hospital stay after coronary artery bypass grafting (CABG) and is associated with poor prognosis and increases postoperative mortality due to the lack of accurate diagnostic methods. This study examines the association between electrocardiography (ECG) ischemic changes and cardiac troponin I concentration. Methods: In this cross-sectional study, the ECG of 100 patients was recorded before and 24 h after the surgery. The cardiac troponin I concentration was measured 24 h after the termination of the surgery. Results: The average concentration of troponin I was 6.79 μg/L in the no-ECG-changes group, 11.69 μg/L in the ST depression group, 11.26 μg/L in the ST elevation group, and 27.54 μg/L in the new Q wave group. The mean troponin concentration was significantly higher in the ECG-changes group compared to no-ECG-changes group. Comparing the ECG-changes together showed significant differences between the new Q wave and the other changes. ST elevation and ST depression were not statistically significant. Conclusion: The three ECG-changes groups had a higher risk of PMI after their CABG. The risk of PMI was at its highest value in the new Q wave group and at its lowest in the no-ECG-changes group. © 2018, Indian Association of Cardiovascular-Thoracic Surgeons.
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