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HHE Report No. HETA-86-489-1789, St. James Annex, Butte, Montana.

Authors
Gunter-BJ
Source
NIOSH 1987 Apr:12 pages
NIOSHTIC No.
00171103
Abstract
An evaluation of exposures to ethrane (13838169) and nitrous-oxide (10024972) was conducted at St. James Annex (SIC-8070) day surgery operating room, in Butte, Montana, in response to a request from the director of nursing. A large number of the surgical procedures performed at the facility were mask inductions, procedures performed without intubation of the patient. General room air samples and breathing zone samples were analyzed for ethrane and nitrous-oxide; three of four samples taken for nitrous-oxide exceeded the evaluation criteria of 25 parts per million (ppm) and all four samples taken for ethrane exceeded the evaluation criteria of 0.5ppm when used with nitrous-oxide. Direct reading measurements did not detect leaks in the anesthesia administering machine, the pop/off valve scavenging system, or other areas of the operating room. The operating room had only about eight to ten air changes per hour. Work related health problems were not revealed by informal interviews with operating room workers. The author concludes that a health hazard exists in the operating room at the facility from exposures to ethrane and nitrous-oxide. The sources of the exposures are waste gases from the mask during induction and insufficient ventilation. The author recommends that the ventilation system be improved to provide an optimum of 20 to 26 air changes per hour, and that air monitoring with passive dosimetry be continued.
Keywords
NIOSH-Author; NIOSH-Health-Hazard-Evaluation; HETA-86-489-1789; NIOSH-Technical-Assistance-Report; Hazard-Confirmed; Region-8; Medical-facilities; Air-contamination; Medical-personnel; Nitrogen-oxides; Anesthetics;
CAS No.
13838-16-9; 10024-97-2;
Publication Date
19870401
Document Type
Hazard Evaluation and Technical Assistance;
Fiscal Year
1987
NTIS Accession No.
PB87-232955
NTIS Price
A03
Identifying No.
HETA-86-489-1789
NIOSH Division
DSHEFS;
SIC Code
8070;
Source Name
Hazard Evaluations and Technical Assistance Branch, NIOSH, U.S. Department of Health and Human Services, Cincinnati, Ohio, Report No. HETA-86-489-1789, 12 pages, 24 references
State
MT; OH;
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