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首页> 外文期刊>Infection control and hospital epidemiology >Shutting down operating theater ventilation when the theater is not in use: infection control and environmental aspects.
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Shutting down operating theater ventilation when the theater is not in use: infection control and environmental aspects.

机译：不使用剧院时，应关闭手术室通风：感染控制和环境方面。

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OBJECTIVE: In hospital operating rooms (ORs), specially conditioned air is supplied to protect patients from airborne agents that may cause infections. This study investigated whether it is hygienically safe to shut down the air supply at night if measures are taken to ensure a timely restart before surgery is performed. DESIGN: Experimental study. SETTING: Neurosurgical OR of a German university hospital. METHODS: The ventilation system was switched off and restarted after 10 hours. Particles suspended in the air near the operating table were counted, OR temperature was measured, and settle plates were exposed and incubated. RESULTS: In 13 investigations, a median of 1.3 x 10(4) particles 0.5 microm/m3 or greater (range, 5.8 x 10(3) to 1.1 x 10(5)) were documented immediately after restart in the morning. After 10 minutes and subsequently, no test showed a particle count exceeding the threshold limit of 1.0 x 10(4) particles 0.5 microm/m3 or greater recommended by the German Society of Hygiene and Microbiology. Only a few colony-forming units (CFU) were detected per settle plate (median, 0 CFU/60 cm2; range, 0 to 8) and OR temperatures quickly reached normal levels. CONCLUSIONS: Shutting down OR ventilation during off-duty periods does not appear to result in an unacceptably high particle count or microbial contamination of the OR air shortly after the system is restarted. Because substantial energy and cost savings are likely, this should be considered in hygienically safe heating, ventilation, and air conditioning systems. However, normal ventilation should be established at least 30 minutes before surgical activity.
机译：目的：在医院手术室（OR）中，提供经过特殊调节的空气以保护患者免受可能引起感染的空气传播剂的侵害。这项研究调查了如果采取措施确保在手术前及时重启，是否在夜间安全卫生。设计：实验研究。地点：德国大学医院的神经外科或。方法：通风系统在10小时后关闭并重新启动。对靠近手术台的空气中悬浮的颗粒进行计数，测量或温度，然后将沉淀板暴露并孵育。结果：在13项调查中，早上重新启动后立即记录了1.3 x 10（4）颗粒的中位数为0.5 microm / m3或更大（范围从5.8 x 10（3）到1.1 x 10（5））。 10分钟后，没有任何测试显示颗粒计数超过德国卫生与微生物学会推荐的阈值限制，即1.0 x 10（4）个颗粒为0.5 microm / m3或更大。每个沉降板仅检测到几个菌落形成单位（CFU）（中值，0 CFU / 60 cm2;范围，0至8），并且OR温度迅速达到正常水平。结论：在非工作时间关闭OR通风似乎不会在系统重启后不久就导致OR空气中的颗粒数过高或微生物污染，这是不可接受的。由于可能会节省大量能源和成本，因此在卫生安全的供暖，通风和空调系统中应考虑到这一点。但是，应在手术前至少30分钟建立正常通气。

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