2. There should be no acne, nasal congestion and runny nose in some areas, and the face should be thoroughly cleaned;
3. Patients who take anticoagulants, vasodilators and hormonal drugs for a long time should stop taking them.
1-2
Zhou;
4. Stop taking ginseng, ginseng and other supplements;
5, for smokers, quit smoking before surgery 2.
Zhou.