A defective unidirectional dome valve was not discovered during normal testing

A defective unidirectional dome valve was not discovered during normal testing

An incompetent unidirectional dome valve, that is, a valve which allows a significant amount of retrograde gas flow, was inadvertently discovered on an anesthesia machine that had been in daily clinical service for five years. The defective valve was not previously discovered during daily pre-use ma...

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Veröffentlicht in:Journal of clinical engineering 1991-11, Vol.16 (6), p.485-490
Hauptverfasser: Dzwonczyk, R, Dahl, M R, Steinhauser, R
Format: Artikel
Sprache:eng
Schlagworte:
Anesthesia, Inhalation - instrumentation
Anesthesia, Inhalation - standards
Calibration
Equipment Failure
Health administration
Hospitals, University - standards
Maintenance and Engineering, Hospital - standards
Ohio
Surgical Equipment - standards
Ventilators, Mechanical - standards
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container_end_page 490
container_issue 6
container_start_page 485
container_title Journal of clinical engineering
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creator Dzwonczyk, R
Dahl, M R
Steinhauser, R
description An incompetent unidirectional dome valve, that is, a valve which allows a significant amount of retrograde gas flow, was inadvertently discovered on an anesthesia machine that had been in daily clinical service for five years. The defective valve was not previously discovered during daily pre-use machine checkout or quarterly preventive maintenance. A review of the literature revealed that valve incompetence is prevalent and has caused patient morbidity; published daily pre-use checkout and preventive maintenance procedures do not test for valve incompetence. A simple procedure is proposed that positively tests unidirectional dome valves for both obstruction and incompetence.
doi_str_mv 10.1097/00004669-199111000-00010
format Article
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source MEDLINE; Journals@Ovid Complete
subjects Anesthesia, Inhalation - instrumentation
Anesthesia, Inhalation - standards
Calibration
Equipment Failure
Health administration
Hospitals, University - standards
Maintenance and Engineering, Hospital - standards
Ohio
Surgical Equipment - standards
Ventilators, Mechanical - standards
title A defective unidirectional dome valve was not discovered during normal testing
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