Microbial Load in Septic and Aseptic Procedure Rooms.

医学 无菌处理 败血症 感染控制 无菌 重症监护医学
作者
Julian-Camill Harnoss,Ojan Assadian,Markus Karl Diener,Thomas Müller,Romy Baguhl,Markus Dettenkofer,Lukas Scheerer,Thomas Kohlmann,Claus-Dieter Heidecke,Stephan Gessner,Markus W. Büchler,Axel Kramer
出处
期刊:Deutsches Arzteblatt International [Deutscher Ärzte-Verlag]
卷期号:114: 465-475 被引量:3
标识
DOI:10.3238/arztebl.2017.0465
摘要

BACKGROUND Highly effective measures to prevent surgical wound infections have been established over the last two decades. We studied whether the strict separation of septic and aseptic procedure rooms is still necessary. METHODS In an exploratory, prospective observational study, the microbial concentration in an operating room without a room ventilating system (RVS) was analyzed during 16 septic and 14 aseptic operations with the aid of an air sampler (50 cm and 1 m from the operative field) and sedimentation plates (1 m from the operative field, and contact culture on the walls). The means and standard deviations of the microbial loads were compared with the aid of GEE models (generalized estimation equations). RESULTS In the comparison of septic and aseptic operations, no relevant differences were found with respect to the overall microbial concentration in the room air (401.7 ± 176.3 versus 388.2 ± 178.3 CFU/m3; p = 0.692 [CFU, colony-forming units]) or sedimentation 1 m from the operative field (45.3 ± 22.0 versus 48.7 ± 18.5 CFU/m2/min; p = 0.603) and on the walls (35.7 ± 43.7 versus 29.0 ± 49.4 CFU/m2/min; p = 0.685). The only relevant differences between the microbial spectra associated with the two types of procedure were a small amount of sedimentation of Escherichia coli and Enterococcus faecalis in septic operations, and of staphylococcus aureus and pseudomonas stutzeri in aseptic operations, up to 30 minutes after the end of the procedure. CONCLUSION These data do not suggest that septic and aseptic procedure rooms need to be separated. In interpreting the findings, one should recall that the study was not planned as an equivalence or non-inferiority study. Wherever patient safety is concerned, high-level safety concepts should only be demoted to lower levels if new and convincing evidence becomes available.
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