Why NPO before and after surgery in appendectomy?

NPO before surgery (nil per os)

- Prevents aspiration of gastric contents, reduces the risk of morbidity, and mortality in patients during the induction of anaesthesia.

- Reduces the risk of postoperative nausea and vomiting (PONV).

- Prevents distension of the bowel (air and fluids), allowing the surgeon a better view of the operating field.

- Reduces the risk of infection

- Empty stomach facilitates intubation and reduces risk of regurgitation and aspiration.

NPO after surgery

- Limits gastrointestinal activity

- Allows the gastrointestinal tract to rest and begin healing

- Prevents bowel obstruction due to adhesions

- Prevents anastomotic leaks, infection

- Minimizes the risk of nausea, vomiting, ileus, and electrolyte imbalance.

- Prevents the bowel from becoming distended with air and fluids;

- Allows the sutures or staples holding the surgical wound together to heal properly