2. Aspirin, oral contraceptives, β-blockers, tricyclic antidepressants, diet pills, cimetidine and Zhongcaoyue should be stopped 2 weeks before operation, so as not to affect the coagulation mechanism and the metabolism of anesthetics, leading to bleeding and local anesthetic poisoning.

3, preoperative examination of blood routine, electrocardiogram, liver and kidney function. Necessary preoperative examination is a prerequisite for safety. Especially if you have a medical history, such as diabetes, you should explain it to the doctor for reference, so as not to leave potential hidden dangers, and women should avoid menstrual period.

4. Quit smoking 2 weeks before surgery and 7 days before surgery, so as not to affect wound healing.

5, the night before the operation, if you are nervous and anxious, you can take a valium orally.

6. Urine should be emptied before operation to avoid bladder filling during operation.

I wish you good health and a happy mood!