手术后伤口发生感染在外科手术中常见,且已成为一个重要的医学及经济问题。手术过程遵循严格无菌操作时,感染率低于3%;轻度污染时,感染率达4%;明显污染时,感染率达9%。住院病人伤口感染可使预期的住院时间延长一倍,费用大量增加。这类感染占医院中所有不良事件的14%。一般认为,因切开伤口感染所致的死亡率较低。患者发生术后伤口感染,其自身的危险 Wound infection after surgery is common in surgery and has become an important medical and economic issue. The infection rate was less than 3% when the operation was strictly sterilized. The infection rate was 4% when lightly contaminated, and the infection rate was 9% when obviously contaminated. Inpatient wound infections can double the expected length of stay and increase costs significantly. These infections account for 14% of all adverse events in the hospital. It is generally believed that mortality due to incisional wound infection is low. Patients with postoperative wound infection, its own risk