Precautions before operation:
1. Do not take drugs containing aspirin within two weeks before operation, because aspirin will reduce platelet coagulation function;
2. Patients with hypertension and diabetes should inform the doctor of their condition at the time of initial diagnosis, so that the attending doctor can confirm the operation plan;
3. Make sure that you are in good health before the operation, and there is no infectious disease or other body inflammation;
4. No makeup before operation; Do not eat greasy food or drink water for half an hour before going to bed.
5. Women should avoid menstrual period and get pregnant.