2018-2019年某院普外科术后切口感染病原学及其危险因素

Etiological characteristics of postoperative incision infection and its related risk factors in general surgery in the hospital from 2018-2019

  • 摘要: 目的 分析2018-2019年某院普通外科手术患者术后切口感染特征、病原菌分布及危险因素。方法 以华中科技大学同济医学院附属同济医院2018年1月-2019年12月普外科行手术治疗的2 673例患者为研究对象,对术后切口感染患者标本进行病原菌鉴定,收集患者临床资料,对手术切口感染的危险因素进行分析。结果 2 673例普外科手术患者中有78例出现术后切口感染,感染发生率为2.92%,其中I类切口感染8例,Ⅱ类切口感染29例,Ⅲ类切口感染41例;从切口分泌物中共分离出84株病原菌,其中革兰阴性菌54株占64.29%,革兰阳性菌28株占33.33%,真菌2株占2.38%;多因素Logistic回归分析结果显示:年龄≥65岁、合并糖尿病、低蛋白血症、手术时间≥3 h、急诊手术、接台手术、Ⅲ类手术切口、手术切口长度≥10 cm、参观人数≥3人、未预防使用抗菌药物、住院时间≥10 d是普外科术后切口感染的独立危险因素(P<0.05)。结论 普外科患者手术切口感染的发生受患者自身、手术室等因素影响,且革兰阴性菌为主要致病菌,针对危险因素进行有效干预,以降低手术切口感染的发病率。

     

    Abstract: OBJECTIVE To analyze the features of postoperative incision infection, pathogens distribution, and its related risk factors in general surgery patients of the hospital from 2018-2019. METHODS A total of 2673 patients undergoing surgery in Tongji Hospital Affiliated to Tongji Medical College of Huazhong University of Science and Technology from Jan 2018 to Dec 2019 were enrolled as the study subjects. Pathogens identification and drug resistance analysis were performed on specimens from patients with postoperative incision infection. The clinical data of patients were collected. The risk factors for incision infection were analyzed. RESULTS Among the 2673 patients in general surgery, there were 78 cases(2.92%) with postoperative incision infection, including 8 cases with type I incision infection, 29 cases with type II and 41 cases with type III. There were 84 strains of pathogens isolated from incision secretions, including 54 strains of gram-negative bacteria(64.29%), 28 strains of gram-positive bacteria(33.33%) and 2 strains of fungi(2.38%). The results of univariate analysis and multivariate Logistic regression analysis showed that age not younger than 65 years old, diabetes, hypoproteinemia, operation time not shorter than 3 h, emergency surgery, consecutive operation, type-III surgical incision, length of surgical incision not shorter than 10 cm, number of visitors not fewer than 3, no prophylactic usage of antibacterial agents, and hospitalization time not shorter than 10 d were independent risk factors for postoperative incision infection in general surgery(P<0.05). CONCLUSION The occurrence of surgical incision infection in general surgery patients is affected by patients’ conditions and operating room. And gram-negative bacteria are the main pathogenic bacteria. Effective intervention should be conducted based on the risk factors to reduce incidence of surgical incision infection.

     

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