Concentrations of methoxyflurane and nitrous oxide in veterinary operating rooms
The surgical rooms of 14 private veterinary practices were monitored to determined methoxyflurane (MOF) concentrations during surgical procedure under routine working conditions. The average room volume for these 14 rooms was 29 m3. The average MOF value for all rooms was 2.3 ppm, with a range of 0.7 to 7.4 ppm. Four of the 14 rooms exceeded the maximum recommended concentration of 2 ppm. Six rooms which had 6 or more air changes/hr averaged 1.1 ppm, whereas 8 rooms with less than 6 measurable air changes/hr averaged 3.2 ppm. Operating rooms that had oxygen flows of more than 1,000 cm3/min averaged 4.4 ppm, whereas those with flows of less than 1,000 cm3/min averaged 1.5 ppm. The average time spent during a surgical procedure using MOF, for all 14 facilities, was 2 hours. Nitrous oxide (N/sub 2/O) concentrations were determined in 4 veterinary surgical rooms. The average N/sub 2/O concentration for 3 rooms without waste anesthetic gas scavenging was 138 ppm. Concentration of N/sub 2/O in the waste anesthetic gas-scavenged surgical room was 14 ppm, which was below the maximum recommended concentration of 25 ppm.
- Research Organization:
- Department of Clinical Investigation, Madigan Army Medical Center, Tacoma, WA
- OSTI ID:
- 6730304
- Journal Information:
- Am. J. Vet. Res.; (United States), Vol. 43:2
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
ANESTHETICS
ECOLOGICAL CONCENTRATION
NITROUS OXIDE
VETERINARY MEDICINE
WORKING CONDITIONS
HOSPITALS
INDOOR AIR POLLUTION
OCCUPATIONAL SAFETY
SURGERY
AIR POLLUTION
BUILDINGS
CENTRAL NERVOUS SYSTEM DEPRESSANTS
CHALCOGENIDES
DRUGS
MEDICAL CENTERS
MEDICINE
NITROGEN COMPOUNDS
NITROGEN OXIDES
OXIDES
OXYGEN COMPOUNDS
POLLUTION
SAFETY
500200* - Environment
Atmospheric- Chemicals Monitoring & Transport- (-1989)
552000 - Public Health