al-Wali W, Kibbler C C, McLaughlin J E
Division of Communicable Diseases, Royal Free Hospital School of Medicine, London.
J Clin Pathol. 1993 Aug;46(8):746-9. doi: 10.1136/jcp.46.8.746.
To evaluate the microbiological efficacy of a down-draught necropsy table ventilation system (which surrounds the cadaver with a "curtain" of air under continuous extraction) during post mortem procedures.
Air sampling was carried out both in the presence and absence of staff and cadaver and during a full post mortem procedure, with functioning and non-functioning table air extraction. The penetration of the air "curtain" was also examined during the use of an oscillating bone saw by means of a tracer organism, Bacillus subtilis var niger, painted on to the skull.
There was little difference between bacterial counts obtained in the presence of staff only, staff plus cadaver, or during a post mortem examination. With all counts obtained, however, there was a two to three-fold reduction when the ventilation was in operation compared with when the extract duct was occluded. Using the tracer organism, a two to three log reduction in counts was shown when the "curtain" was in operation during the use of the oscillating bone saw.
These results suggest that the system provides potential protection for post mortem room staff against airborne infections.
评估在尸检过程中，一种向下通风的尸检台通风系统（该系统通过持续抽取在尸体周围形成一道空气“帘幕”）的微生物学效果。
在有工作人员和尸体在场以及不在场的情况下，以及在完整的尸检过程中，分别在工作台空气抽取功能开启和关闭时进行空气采样。在使用摆动式骨锯时，还通过在颅骨上涂抹示踪生物——枯草芽孢杆菌黑色变种，来检测空气“帘幕”的穿透情况。
仅工作人员在场、工作人员加尸体在场或尸检过程中所获得的细菌计数之间差异不大。然而，在所有获得的计数中，与抽取管道堵塞时相比，通风系统运行时细菌计数减少了两到三倍。使用示踪生物检测发现，在使用摆动式骨锯时空气“帘幕”运行，细菌计数减少了两到三个对数级。
这些结果表明该系统可为尸检室工作人员提供潜在的防护，预防空气传播感染。
