Clark R P, Reed P J, Seal D V, Stephenson M L
J Hyg (Lond). 1985 Oct;95(2):325-35. doi: 10.1017/s0022172400062744.
Concentrations of air-borne bacteria and particles have been measured in turbulently ventilated operating theatres in full flow, half flow and zero flow conditions. Increased air-borne challenge produced by human activity and by mechanical cleaning procedures is demonstrated: die-away of this contamination is shown to be related to the ventilation rate. Ventilation can be reduced or turned off at night and during weekends, and cleaning can also be carried out, without increased risk of infection if full flow is restored one hour prior to preparation for surgery. Areas surrounding the theatres should remain at positive pressure with regard to the general hospital environment during low or no flow periods. The implementation of such energy-saving policies will substantially reduce theatre running costs without introducing infection hazards.
在全流量、半流量和零流量条件下，对湍流通风的手术室中的空气传播细菌和颗粒浓度进行了测量。结果表明，人类活动和机械清洁程序会增加空气传播的挑战：这种污染的消散与通风率有关。夜间和周末可降低或关闭通风，也可进行清洁，前提是在手术准备前一小时恢复全流量，这样就不会增加感染风险。在低流量或无流量期间，手术室周围区域相对于医院整体环境应保持正压。实施此类节能政策将大幅降低手术室运营成本，同时不会引入感染风险。
