Recovering from surgery is greatly dependent upon the type of surgery you willbe having. Enhanced recovery pathways include preoperative, intraoperative, andpostoperative practices that decrease complications and accelerate recovery. How longit takes you to fully recover from your surgery will depend on many things, including:. your age . your health before the surgery . the extent of your injuries . the success of your rehabilitation . the amount of rest you get.It may take a few days or a week to recover from a less complex operation, but it can takea few months to recover from major surgery. The American Society of AnesthesiologistsPhysical Status (ASA-PS) classification has long been used as a ranking system thatquantifies patient health before anesthesia and surgery. It is widely used to determinea patient's likelihood of developing postoperative complications. ERAS is the acronymof Enhanced Recovery After Surgery: a multimodal perioperative approach based onthe best medical evidence. The aim of this program is to try to change the physiologicaland psychological responses to major surgery. Malnutrition is one of the most importantpatient-related factors affecting morbidity and mortality in surgical patients. In addition, infections are important in the recovery process after surgery.