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目的：探讨应用改良后的呼吸机对病室环境卫生学的影响。方法：对10 例产碳青霉烯酶肺炎克雷伯菌肺感染应用呼吸机的患者和40 例肺部感染耐甲氧西林金黄色葡萄球菌(MRSA)使用呼吸机的患者进行分组试验，对病室环境卫生学监测结果进行统计分析。机器改良方法是呼吸机的呼气阀处连接一条螺纹管，将带菌空气引出，消毒后排放。结果：肺部感染产碳青霉烯酶肺炎克雷伯菌应用改良后呼吸机的一组在空气、床头桌、水池、操作中人员手的阳性率分别为20%、10%、20%、10%,较未改良的对照组为 80%、70%、70%、50%有明显的下降。肺部感染MRSA 使用有创改良呼吸机组空气、床头桌、水池、操作中人员手的阳性率分别为 10%、10%、5%、10%均低于无创改良组的20%、20%、10%、20%。结论：此种方法有效地降低了环境的污染程度，降低了医源性医院感染的风险。加强洗手和隔离等卫生预防学措施可以有效的降低MRSA 的医院感染率。

英文摘要:

Objective: To study the impact of wards environmental health with the improved ventilator. Methods: In order to make statistical analysis of monitoring results about wards environmental health , 10 cases of klebsiella pneumonuiae carbapenemase (KPC) pulmonary infection and 40 cases of Methicillin-resistant Staphylococcus aureus (MRSA) pulmonary infection were divided into two groups which were used ventilator. The method of improved ventilator was that the exhalation valve was attached with a threaded pipe which accessed to the adjacent empty wards direct and the air of disinfection with air sterilizer was discharged into the outdoor. Results: The group of klebsiella pneumonuiae carbapenemase (KPC) pulmonary infection positive rate were 20%,10%,20%,10% in air, bedside table, pool, hands of operator which was used improved ventilator, obviously decreased when compared with control group without improved ventilator which was about 80%,70%,70%,50%. The group of Methicillin-resistant Staphylococcus aureus (MRSA) pulmonary infection positive rate were 10%, 10%, 5%, 10% in air, bedside table, pool, hands of operator, which were lower than the group without improved ventilator about 20%, 20%, 10%, 20%. Conclusion : This method effectively reduces the pollution of the environment and iatrogenic risk of nosocomial infection. Strengthening health prevention measures such as hand washing and isolation can effectively reduce the rates of the MRSA infection in hospital.

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