title: Modified occlusion tests for the Bain breathing system.
abstract: 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.
authors.affiliation: Shackleton Department of Anaesthetics, Southampton General Hospital.
authors.forename: P J
authors.initials: PJ
authors.lastname: Heath
authors.forename: L F
authors.initials: LF
authors.lastname: Marks
mesh_terms: D000769:Anesthesia, Inhalation / Q000295:instrumentation*; D004868:Equipment Failure; D004869:Equipment Safety; D006801:Humans; D012119:Respiration