AI Article Synopsis
- * In 1991, preliminary exposure limits for isoflurane, enflurane, and nitrous oxide were set in Hamburg and Schleswig-Holstein.
- * A study of 20 hospitals in Niedersachsen revealed that anesthetic gas concentrations often exceeded safe limits due to poor ventilation and equipment failures, indicating a need for improved air quality management in operating rooms.
Article Abstract
Volatile anesthetics are suspected to cause various health risks even in subnarcotic concentrations (hepatotoxicity, mutagenicity, teratogenicity). Yet only for halothane a limit (MAK-value = 5 ppm) has been established for the entire FRG. In addition, in 1991 Hamburg and Schleswig-Holstein defined preliminary limits for isoflurane, enflurane and nitrous oxide. We analysed the pollution of operating-room air by narcotic gases in 20 hospitals of Niedersachsen. In several cases limits have been exceeded evidently. Reasons for high concentrations were: insufficient room ventilation, defective air-conditioning plants, technical defects (leakage) and high gas emission due to special techniques in anesthesia (bronchoscopy). In order to take care of personnel-health air concentration of anesthetic gases should be kept as low as possible by the help of sufficient room ventilation avoiding unnecessary emissions.
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