Coronary artery surgery: indications and recent experience

Area of Science:

• Cardiothoracic Surgery
• Cardiovascular Medicine
• Vascular Surgery

Background:

• Coronary artery disease (CAD) remains a leading cause of mortality globally.
• Surgical interventions like coronary artery bypass grafting (CABG) are crucial for managing severe CAD.
• Evaluating surgical outcomes and risk factors is essential for optimizing patient care.

Purpose of the Study:

• To review the comprehensive experience of coronary artery surgery.
• To identify major influences on hospital mortality after CABG.
• To assess early symptomatic results following CABG.

Main Methods:

• Retrospective review of patients undergoing coronary artery surgery over 31 months.
• Analysis of hospital mortality rates for elective bypass grafting.
• Evaluation of pre-operative factors and surgical procedure extent influencing mortality.
• Follow-up assessment of patient symptom status at one and two years post-surgery.

Main Results:

• Overall hospital mortality for elective CABG was 3.9%, decreasing to 2.5% in patients with good pre-operative left ventricular function.
• Key mortality predictors included pre-operative left ventricular function, extent of CAD, number of grafts, coronary endarterectomy, and concomitant valve surgery or aneurysm resection.
• At one year post-surgery, 74% of patients were symptom-free and 85% improved; at two years, 70% were symptom-free and 80% improved.
• Early deaths were linked to graft closure; late symptom recurrence was associated with graft closure or native vessel disease progression.

Conclusions:

• Coronary artery surgery offers significant symptomatic improvement for patients with coronary artery disease.
• Pre-operative left ventricular function and surgical complexity are critical determinants of hospital mortality.
• Understanding these risk factors and outcomes guides clinical decision-making for CABG.