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【目的】观察老年急腹症患者术后肺部感染的发生情况，并分析其相关危险因素，以期有效降低老年急腹症患者术后肺部感染的发生率。【方法】回顾性分析114例经手术治疗的老年急腹症患者，统计术后肺部感染的发生率，相关因素分析采用单因素χ2检验和多因素Logistic回归分析。【结果】114例患者中共发生肺部感染30例，发生率为26．32％（30/114）。多因素Logistic检验显示肺部感染危险因素有年龄（OR＝2．356，95％CI1．845～3．009）、合并肺部疾病（OR＝3．526，95％CI2．346～5．300）、全身麻醉（OR＝3．410，95％CI2．469～4．710）、自主排痰（OR＝0．472，95％CI0．335～0．665）、人工排痰（OR＝0．503，95％CI0．394～0．642）、口腔清理（OR＝0．481，95％CI0．369～0．627）、贫血（OR＝1．821，95％CI1．632～2．032）、免疫功能差（OR＝2．526，95％CI1．887～3．381）和住院时间（OR＝1．793，95％CI1．421～2．262）。【结论】老年急腹症患者术后肺部感染的发生率很高，并且与多种因素有关，应根据相关危险因素加强围手术期的预防、治疗和护理工作。“,”[Objective] To observe the incidence of postoperative pulmonary infection in senile acute abdomen and to analyze the associated risk factors in order to reduce the incidence of postoperative pulmonary infection in se-nile acute abdomen .[Methods]Totally 114 senile patients with acute abdomen undergoing surgery were analyzed respectively .The incidence of postoperative pulmonary infection was calculated .The associated risk factors were tested by single factor χ2 test and multi-factor Logistic regression analysis .[Results] Among the 114 patients ,30 patients had postoperative pulmonary infection ,and the incidence rate was 26 .32% .The multi-factor Logistic test showed that age(OR= 2 .356 ,95% CI 1 .845~3 .009) ,the combined pulmonary diseases(OR= 3 .526 ,95% CI 2 .346~5 .300) ,general anesthesia(OR= 3 .410 ,95% CI 2 .469~ 4 .710) ,sputum excretion by oneself (OR=0 .472 ,95% CI 0 .335~0 .665) ,sputum excretion by others (OR=0 .503 ,95% CI 0 .394~0 .642) ,mouth clean (OR=0 .481 ,95% CI 0 .369~0 .627) ,anemia(OR=1 .821 ,95% CI 1 .632~2 .032) ,poor immune function(OR=2 .526 ,95% CI 1 .887~3 .381) and hospital stay (OR=1 .793 ,95% CI 1 .421~2 .262) were the risk factors for postoperative pulmonary infection .[Conclusion] The incidence of postoperative pulmonary infection is high in eld-erly patients with acute abdomen ,and is associated with a variety of factors .On the basis of the relevant risk fac-tors ,the prevention ,treatment and nursing during the operation should be strengthened .