Coronary angiography and aorto-coronary bypass surgery in type 2 diabetic patients

Area of Science:

• Cardiology
• Diabetology
• Vascular Surgery

Background:

• Type 2 diabetes is associated with increased cardiovascular risk and poorer outcomes in coronary artery disease.
• Optimal treatment strategies for diabetic patients with angina remain a focus of research.

Purpose of the Study:

• To compare coronary angiographic findings, surgical outcomes, and prognostic factors in Type 2 diabetic versus non-diabetic patients with angina.
• To evaluate the efficacy of coronary artery bypass grafting (CABG) in diabetic patients.

Main Methods:

• Analysis of 1853 non-diabetic and 145 diabetic patients undergoing coronary angiography and 5-year follow-up.
• Comparison of surgical versus medical treatment, focusing on perioperative mortality, survival, reinfarction, and asymptomaticity rates.
• Multivariate analysis of risk factors and clinical features.

Main Results:

• Diabetic patients exhibited more multi-vessel stenoses, greater stenosis diffusion, and worse left ventricular function.
• No significant differences in perioperative infarction or mortality between diabetic and non-diabetic groups.
• Operated diabetic patients showed higher survival and longer symptom-free periods than unoperated diabetic patients.
• Operated diabetic patients had similar survival but more angina recurrence than operated non-diabetic patients.
• Unoperated diabetic patients had lower survival rates than unoperated non-diabetic patients.
• Multivariate analysis identified diabetes as non-significant for survival.

Conclusions:

• Coronary artery bypass grafting is a suitable therapeutic option for Type 2 diabetic patients with coronary artery disease.
• Surgery confers a reduction in mortality for diabetic patients with coronary artery disease, irrespective of diabetes status.
• While surgical outcomes are comparable in terms of survival, diabetic patients may experience more angina recurrence post-CABG.