[Myocardial revascularization. The evolution of 100 cases]

Area of Science:

• Cardiovascular Surgery
• Cardiac Biomarkers
• Postoperative Complications

Context:

• Aorto-coronary bypass surgery is a critical intervention for severe coronary artery disease.
• Understanding postoperative complications, particularly myocardial infarction (MI), is vital for patient outcomes.
• This study focuses on the postoperative course of 100 patients undergoing this procedure.

Purpose:

• To investigate the incidence and diagnostic markers of postoperative myocardial infarction (MI) following aorto-coronary bypass surgery.
• To evaluate the diagnostic utility of Creatine Phosphokinase (CPK) levels in identifying perioperative MI.

Summary:

• The study analyzed 100 patients undergoing aorto-coronary bypass surgery, with a significant proportion having pre-existing conditions like myocardial infarction and symptomatic angina.
• Coronary angiography revealed extensive disease, with 73% having trivascular lesions and 8% stenosis of the left main coronary artery.
• Postoperative complications included 15 cases of acute myocardial infarction (AMI), bleeding, and cardiac failure. CPK levels of 500 UI or more demonstrated high positive (81.2%) and negative (97.6%) predictive values for AMI.

Impact:

• Elevated postoperative CPK levels (≥500 UI) can serve as a reliable diagnostic indicator for acute myocardial infarction (AMI) in patients after bypass surgery.
• This finding aids in the timely diagnosis and management of perioperative MI, potentially improving patient prognosis.
• The study highlights the importance of monitoring cardiac biomarkers in the postoperative period for early detection of ischemic events.