Evaluate the glycemic index, Hb at the time before surgery, right after surgery, 5 hours after surgery and compare between the two groups - Taking samples to test hemoglobin concentration index, blood sugar immediately before surgery, immediately after surgery and the fifth hour after surgery according to Do Trung Phan, Hb irrigating solution recovered according to Akan, Do Trung Phan - The blood volume lost according to the formula: Blood volume lost (ml) = {volume of irrigating solution recovered (ml) × 11 concentration Hb irrigating solution recovered (g / l)}: blood Hb concentration before surgery (g / l) According to the author Akan, Hahn.