Evaluation of the Ketogenic Diet to Improve Post Operative Cognitive Decline in Cardiac Surgery

The ketogenic diet consisting of fats (70%), protein (20%) and carbohydrates (10%) will be consumed for 14 days prior to undergoing open-heart surgery, and up to 6 days postoperatively or until discharge (if within 6 days postoperatively).

The control diet consisting of a Mediterranean diet, at 25% fat, 20% protein and 55% carbohydrates will be consumed for 14 days prior to undergoing open-heart surgery, and up to 6 days postoperatively or until discharge (if within 6 days postoperatively).