Does Diabetes Have an Influence on Regional Deformation Parameters in Patients with Normal Systolic Function during Off-Pump Coronary Artery Bypass Grafting?

摘要

Objectives: The aim of this study was to assess the recovery of regional myocardial function of the left-ventricular septal wall and the septal site of the mitral valve (MV) annulus by tissue Doppler imaging (TDI). Methods: In 63 (32 diabetic and 31 control) patients having off-pump coronary artery bypass grafting (OPCABG), including the left internal mammary artery (LIMA) and the left anterior descending coronary artery (LAD), TDI measurements were performed before operation (baseline), 5 min after LIMA-LAD revascularization (early reperfusion) and after completion of all anastomoses (after revascularization). Results: Compared to the patients with diabetes, the controls had higher peak systolic velocities of the mid septal segments in the early reperfusion measurement (p = 0.002). After revascularization, values of peak systolic strain at the basal (-10.13 vs. -13.36%, p = 0.044) and mid septal segments (-8.25 vs. -12.69%, p = 0.009) were decreased in the diabetic patients compared to the controls.