Document Detail

A defective unidirectional dome valve was not discovered during normal testing.
MedLine Citation:
PMID:  10115614     Owner:  NLM     Status:  MEDLINE    
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.
R Dzwonczyk; M R Dahl; R Steinhauser
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of clinical engineering     Volume:  16     ISSN:  0363-8855     ISO Abbreviation:  J Clin Eng     Publication Date:    1991 Nov-Dec
Date Detail:
Created Date:  1992-02-12     Completed Date:  1992-02-12     Revised Date:  2000-12-18    
Medline Journal Info:
Nlm Unique ID:  7703941     Medline TA:  J Clin Eng     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  485-90     Citation Subset:  H    
Ohio State University Hospitals, Columbus.
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MeSH Terms
Anesthesia, Inhalation / instrumentation*,  standards
Equipment Failure*
Hospitals, University / standards
Maintenance and Engineering, Hospital / standards*
Surgical Equipment / standards
Ventilators, Mechanical / standards

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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