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 you are healthy before the operation, and there is no infectious disease or other body inflammation.

4. Don't put on makeup before the operation.

5. Women should avoid menstruation, pregnancy and pregnancy.

6. Men should quit smoking one week in advance.

Precautions after operation:

1, negative pressure drainage was placed under the cap aponeurosis for 3 days, hemostatic drugs and antibiotics were applied appropriately, and the stitches were removed 8 ~ 10 days after operation.

2. Try to avoid the operation site from getting wet within 15 days after operation.

3, ensure the surgical site clean, prevent infection. If there is blood scab or secretion on the wound, it can be wiped with sterile physiological saline.

4. The local wound after operation can be bandaged with pressure or cold compress with ice pack, but the pressure should not be too high to avoid damaging the surgical site. Once there is bleeding and severe hematoma after operation, you should go to the hospital for follow-up in time.

There should be a quiet and comfortable environment to recuperate after operation. Avoid bearing load and aggravate wound swelling.

6. There will be some pain in the wound after the operation, but it will gradually decrease with the passage of time. Patients should not rush to take painkillers, because aspirin drugs will aggravate wound bleeding.

7. Avoid spicy foods such as peppers.

8, strictly abide by the doctor's advice and follow-up.