Just take the national examination for graduate students. Generally, schools with plastic surgery majors take the unified exam first, and then take the plastic surgery exam during the interview.

When repairing or closing fresh wounds, strict aseptic operation is also required, and contaminated wounds are treated as clean wounds, so that skin grafts or flaps can survive intact and local functions can be restored. When facial surgery involves nose, eyes, mouth and other parts, it is not easy to achieve local absolute sterility.

Sterile operation is a principle that must be strictly implemented in plastic surgery. Because any infection will directly affect the surgical effect, plastic surgery operation is more complicated, the operation time is longer, the operation field is not only wider, but sometimes more than two operation fields are involved, so the chances of wound exposure are more and the chances of infection are also increased.

Especially in tissue transplantation, the transplanted tissue is ischemic tissue, and the resistance to infection will inevitably decrease before the blood supply is re-established. Therefore, plastic surgery should strictly abide by aseptic operation. If the transplanted tissue is infected, all previous efforts will be wasted, not only the transplanted tissue is infected and necrotic, but also the affected area is destroyed, thus making the patient lose the only chance of repair.