Premium
Modified occlusion tests for the Bain breathing system
Author(s) -
HEATH P. J.,
MARKS L. F.
Publication year - 1991
Publication title -
anaesthesia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.839
H-Index - 117
eISSN - 1365-2044
pISSN - 0003-2409
DOI - 10.1111/j.1365-2044.1991.tb09412.x
Subject(s) - medicine , breathing , occlusion , coaxial , tube (container) , anesthesia , surgery , mechanical engineering , engineering
Summary Undetected defects in the inner tube of the Bain coaxial anaesthetic breathing system may result in a greatly increased apparatus deadspace. Several authorities have advocated tests intended to detect inner tube problems; however, the efficacy of these tests has never been validated. In this study none of the tests were able to detect all the induced defects. A modification of an existing test using the backbar pressure‐relief valve and a new double occlusion test were sufficiently sensitive to detect all defects.