The purpose of fasting before gastrointestinal surgery

Fasting before gastrointestinal surgery usually includes clear surgical vision, prevention of vomiting, prevention of infection, etc. The analysis is as follows:

1. Clear surgical vision

Gastrointestinal surgery generally requires incision, anastomosis, reconstruction of the digestive tract, etc. Fasting before surgery can make the surgical vision clearer and facilitate the doctor's operation.

2. Prevention of vomiting and aspiration

Patients usually need epidural anesthesia or general anesthesia before gastrointestinal surgery. Under anesthesia, patients 'physiological reflexes are inhibited. If they eat, due to gastrointestinal tract traction after surgery, vomiting and aspiration may occur. Fasting before gastrointestinal surgery can prevent this situation.

3. Prevention of infection If they do

not fast before gastrointestinal surgery, food in the gastrointestinal tract will leak during surgery, which may cause serious infection. Fasting before gastrointestinal surgery can prevent infection.