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目的:探讨胃癌根治术后30d内非计划再手术的原因及其危险因素.方法:采用回顾性病例对照研究设计,以2010年1月至2018年12月乐山市市中区人民医院收治的516例行开腹或腹腔镜胃癌根治术的患者作为研究对象,回顾性收集患者一般资料、临床病理资料、术后30d随访情况、术后再手术原因等.采用多因素Logistic回归模型分析发生胃癌根治术后30d内非计划再手术的相关危险因素.结果: 术后30d内非计划再手术率为3. 9% .非计划再手术组患者并发症发生率为45. 0% 、病死率为10. 0% 、住院时间(27. 5 ± 12. 0)d分别高于未施行非计划再手术组患者(均P25kg/m2 、术中出血量≥100mL是影响患者30d内发生非计划再次手术的独立危险因素( OR=1. 900, 2. 296, 2. 010; 95% CI=1. 066~3. 388, 1. 226~4. 298, 1. 032~3. 913; P25kg/m2 )患者以及术中出血量多(≥100mL)是胃癌根治术后早期发生非计划再手术的独立危险因素.“,”To explore the causes and risk factors of unplanned reoperation within 30 days after radical gastrectomy. Methods: By using retrospective case control study design, 516 patients with gastric cancer who underwent open or laparoscopic radi-cal gastrectomy in our hospital from January 2010 to December 2018 were studied. General data, clinicopathological data, 30-day fol-low up after operation and reasons for reoperation were retrospectively collected. Multivariate logistic regression model was used to ana-lyze the risk factors of unplanned reoperation within 30 days after radical gastrectomy. Results: The rate of unplanned reoperation with-in 30 days after radical gastrectomy was 3. 9% . The incidence of complications, incidence of mortality and hospitalization time in the unplanned reoperation group were 45. 0% , 10. 0% and (27. 5+12. 0) d, respectively, which were higher than those in the control group (P 60 years old), BMI >25kg/m2 and intraoperative bleeding ( >100mL) were independent risk fac-tors for unplanned reoperation within 30 days ( OR=1. 900, 2. 296, 2. 010; 95% CI=1. 066 -3. 388, 1. 226 -4. 298, 1. 032 -3. 913; P25kg/m2) and excessive intraoperative bleeding ( >100mL) are independent risk factors for early unplanned reoperation after radical gastrectomy.