ILO Home
Go to the home page
Site map | Contact us Franšais | Espa˝ol

CISDOC database

Document ID (ISN)62277
CIS number 94-954
ISSN - Serial title 0096-1736 - Journal of Occupational Medicine
Year 1993
Convention or series no.
Author(s) Schapera A.
Title An anesthesia mask gas-scavenging system
Bibliographic information Nov. 1993, Vol.35, No.11, p.1138-1141. Illus. 6 ref.
Abstract The level of nitrous oxide (N2O) contamination in the breathing zone of anaesthesiologists was measured while they administered inhalation anaesthesia by mask to five patients. A mask gas-scavenging attachment was used for 30min and then removed while anaesthesia continued for a further 30min. The levels of N2O with and without the scavenging attachment were compared. Use of the scavenging attachment reduced N2O contamination from >150ppm to <5ppm, a level well below the 25ppm limit recommended by the US National Institute for Occupational Safety and Health. The device consists of a clear plastic drape that covers the patient's face, and a suction tube connected to a vacuum line.
Descriptors (primary) local exhaust; hospitals; nitrous oxide; inhalation anaesthetics
Descriptors (secondary) operating theatres; description of equipment
Document type D - Periodical articles
Country / State or ProvinceUSA
Subject(s) Toxic and dangerous substances
Broad subject area(s) Chemical safety
Browse category(ies) Ventilation
Health care services
Inorganic substances