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.
Study Type
OBSERVATIONAL
Enrollment
150
High-sensitivity troponin levels are measured preoperatively, predischarge, and at 6-month follow-up to assess perioperative myocardial injury.
A diagnostic assessment panel including high-sensitivity troponin testing, electrocardiography, echocardiography, and cardiac magnetic resonance imaging performed during the perioperative period.
the Second Hospital of Jilin University
Changchun, Jilin, China
Incidence of Perioperative Myocardial Injury (PMI)
Perioperative myocardial injury defined by elevation of high-sensitivity troponin above the 99th percentile upper reference limit together with new myocardial injury detected by cardiac MRI or supportive ECG/echocardiographic changes. PMI is assessed using laboratory testing and imaging performed preoperatively, within 48 hours post-CABG, and at discharge.
Time frame: Within 48 hours post-CABG
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