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Infect Control Hosp Epidemiol. 1996 Jul;17(7):419-22.

The effect of a portable HEPA-filtered body exhaust system on airborne microbial contamination in a conventional operating room.

Author information

1
Research Medical Center Consulting Faculty, University of Missouri, Kansas City School of Medicine, USA.

Abstract

OBJECTIVE:

To study the effect of a portable HEPA-filtered air exhaust system (Stackhouse Freedom Surgical Helmet System) on airborne microbial contamination in a modern conventional operating room.

DESIGN AND SETTING:

Microbial air sampling was done with a two-stage Anderson sampler at the wound site during 46 total joint replacements. All operations were performed by the same surgeon in the same operating room at a large community hospital.

RESULTS:

In 18 cases done without air exhaust hoods, the number of bacterial and fungal colony-forming units (CFU) ranged from 0.6 to 11.7 (mean, 3.6). Air sampling during 28 operations with the operating team in air exhaust hoods revealed a mean of 3.6 CFU (range, 0 to 11.4). Bacterial CFU averaged 3.4 without hoods and 3.2 with exhaust hoods. Coagulase-negative staphylococci were the most common isolates (48% of isolates with hood, 55% without hood). No infections occurred.

CONCLUSION:

We concluded that these air exhaust hoods did not lower airborne microbial contamination detectable with this air sampling method, as compared to standard head cover and mask, in a modern conventional operating room.

PMID:
8839798
[Indexed for MEDLINE]

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