Question

what is the purpose of a preoperative procedure? to help a patient recover from surgery to ready a patient for surgery

Explanation:

Preoperative procedures are carried out before surgery. Their main goal is to get the patient ready physically (e.g., through tests, fasting instructions) and mentally (e.g., explaining the procedure) for the upcoming surgical event. "To help a patient recover from surgery" would be the role of postoperative (after - surgery) care.

Answer:

to ready a patient for surgery