Perioperative myocardial injury (PMI) following coronary artery bypass grafting (CABG) is associated with postoperative morbidity, mortality, and long-term outcomes. High-sensitivity troponin assays and cardiac MRI offer reliable diagnostic tools for PMI, but evidence regarding optimal diagnostic thresholds and perioperative imaging strategy is limited. This prospective clinical study aims to determine the incidence of perioperative myocardial injury using multimodal assessments including high-sensitivity troponin, electrocardiogram, echocardiography, cardiac MRI, and perioperative cardiovascular events.
Age ≥ 21 years
Undergoing CABG for unstable angina
Able to provide written informed consent
No major cardiovascular event in the prior 6 months
Significant hepatic, renal, or other major organ dysfunction
Pregnancy or breastfeeding
Withdrawal during the study
Contraindication to cardiac MRI (metal implants, claustrophobia, etc.)
Second Hospital of Jilin University
Lead sponsor