Wound classification and healing grading?

According to the possibility of trauma and contamination in operation, incisions are divided into three categories: 1, clean incisions, denoted by "I", which means non-traumatic and uninfected wounds; The operation did not enter the respiratory tract, digestive tract, urogenital tract and oropharynx. Refers to a sutured aseptic incision, such as subtotal thyroidectomy. 2. Incision that may be contaminated, indicated by "Ⅱ", refers to suture incision that may be contaminated during operation, such as subtotal gastrectomy. Parts of the skin that are not easy to be completely disinfected, debridement and suture wounds within 6 hours, and re-incision of newly sutured incisions all belong to this category. 3. Contaminated incisions, denoted by "Ⅲ", refer to incisions that are close to infected areas or tissues and directly exposed to infectious substances, such as suppurative appendicitis surgery, intestinal obstruction necrosis surgery, and old traumatic wounds with local necrotic tissues. There are also three grades of healing: 1, Grade A healing, which means initial healing, excellent healing and no adverse reactions. 2. Class B healing, indicated by "B", refers to poor healing and inflammatory reaction at the healing site, such as redness, induration, hematoma and effusion. But it didn't fester. 3. Class C healing, represented by "C", means that the incision is suppurated and needs incision and drainage. Recording method: If the subtotal thyroidectomy healed well, it will be marked as "Ⅰ-A", if there is hematoma after subtotal thyroidectomy, it will be marked as "Ⅱ-B", and so on.