(2) Preparation of diet and life. Those who do not need to fast can maintain their normal life and diet for 3 days before operation, and those who need to fast should control their diet. Try not to smoke and drink, eat spicy food, pay attention to proper rest and keep enough sleep.
(3) physical preparation. Do a good job in preoperative examination and other related examinations to rule out surgical contraindications. Actively treat primary diseases that may affect the normal operation and postoperative recovery, such as severe anemia, thrombocytopenia, hypertension, diarrhea, etc.
Prevent colds and keep healthy. Adult women must wait until their menstruation is clean before they can have surgery. People with habitual constipation should adjust their defecation before operation to avoid the difficulty of defecation after operation and aggravate the pain.
(4) Preparation of intestine and skin. Before the operation, the feces in the intestine were emptied by cleaning enema or defecation, the body hair around the anus was shaved with the help of a doctor or nurse, and the anus was washed with soapy water.
(5) drug preparation. Antibiotics and other drugs are generally not needed before operation for anorectal diseases, but some operations need to use antibiotics properly from 3 days before operation. Patients with hypertension and other diseases need to take antihypertensive drugs to continue treatment, and patients with infectious diseases need to continue to use necessary antibiotics. Skin tests such as procaine and penicillin should be done before operation, and preoperative needles such as phenobarbital should be injected by nurses half an hour before operation.
(6) Other preparatory work. Prepare a few loose underwear, a big bidet that can be used to bathe the anus, a soft towel or gauze (old towel or removed disinfection mask can be used), and soft toilet paper for postoperative use.