The Effect of Remote Ischemic Preconditioning on Diastolic Function in Coronary Artery Bypass Surgery Between Diabetic and Non-Diabetic Patients

Patients will undergo Remote Ischemic Preconditioning using a blood pressure cuff inflated on the upper limb to induce ischemia and reperfusion, 40 mmHg above systolic pressure. The procedure will involve 3 cycles of inflation (5 minutes each) and deflation (5 minutes each) post intubation