**3.2. Impact of microvascular disease on CABG**

Microvascular disease, such as that which occurs in diabetic patients has also been shown to adversely affect outcomes after CABG. These complications generally stem from a cumula‐ tive poor glycemic control. In a study on 223 patients with diabetic retinopathy followed 11 years post-CABG, it was found that diabetic retinopathy was a strong independent predic‐ tor of overall mortality (relative risk [RR], 4.0), and repeat revascularization (RR, 3.0) [72].
