Bahr E, Kruppa B, Rüden H
Offentl Gesundheitswes. 1989 Jan;51(1):21-6.
By means of measurement examples it is shown that the examination of the cfu-concentration in the supply-air is not a sufficient criterion for the hygienic-microbiological evaluation of air-conditioning systems in operation wards. Maximum upper values for cfu-concentration were only exceeded a little in some cases. Particle measurements, carried out simultaneously, gave further information on the hygienic status of the air supplied by the air-conditioning system and permitted an evaluation of the ventilation system (for example an air-supply ceiling with a stabilized air ventilation). An efficient air-ventilation system should have the effect that the air quality in the operation area is of nearly the same quality as the supply-air. On the basis of own measurements maximum upper values and recommended values for cfu- and in particular particle-concentrations in the supply-air of air-conditioning systems with three-step filtration were proposed. The set-up and the carrying out of the measurement is described to standardize a "hygienic evaluation" of air-conditioning systems in operation theatres. Help for the interpretation of measurement results is given by means of measurement examples.
通过测量示例表明，对送风口中菌落形成单位（cfu）浓度的检测并非对手术室中运行的空调系统进行卫生微生物学评估的充分标准。在某些情况下，cfu浓度的最大上限值仅被略微超过。同时进行的颗粒物测量提供了关于空调系统所送空气卫生状况的更多信息，并允许对通风系统进行评估（例如带有稳定空气通风的送风天花板）。高效的空气通风系统应能使手术区域的空气质量与送风质量几乎相同。基于自身测量结果，提出了具有三级过滤的空调系统送风口中cfu以及特别是颗粒物浓度的最大上限值和推荐值。描述了测量的设置和实施过程，以规范对手术室中空调系统的“卫生评估”。通过测量示例为测量结果的解释提供了帮助。
