Effect of Oral Zinc and Vitamin E Supplementation on Short-term Postoperative Outcomes in Cardiac Surgery Patients.

In the zinc + vitamin E supplementation group, patients will receive a cumulative dose of 120 mg of oral zinc supplementation plus a cumulative dose of 1200 IU of oral vitamin E before surgery. After surgery, from the second day to the end of the hospital stay, patients receive 30 mg of zinc supplement plus 200 units of vitamin E per day.

Patients in the placebo group will receive placebo pills before and after surgery.