Document Detail

Aestiva ventilation mode selector switch failures.
MedLine Citation:
PMID:  17377096     Owner:  NLM     Status:  MEDLINE    
We describe three cases of previously unreported failures of the Bag-Ventilator Switch in Aestiva/5 anesthesia machines (GE Healthcare/Datex-Ohmeda, Madison, WI). Each failure mode produced a large breathing-circuit leak. Examination of the switches revealed a cracked toggle actuator, residue build-up, and a cracked selector switch housing as causes for the failures. When a leak with no visible cause develops, consider advancing the mode selector switch fully to its mechanical limit or consider that the toggle actuator or its anchoring mechanism may have failed. These cases demonstrate that it is imperative to always be prepared to immediately use an alternate method for ventilation. Cases describing failure to ventilate due to sudden equipment malfunction underscore the need to always have functioning backup ventilation equipment available.
Dietrich Gravenstein; Harshdeep Wilkhu; Edwin B Liem; Stuart Tilman; Samsun Lampotang
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Publication Detail:
Type:  Case Reports; Journal Article    
Journal Detail:
Title:  Anesthesia and analgesia     Volume:  104     ISSN:  1526-7598     ISO Abbreviation:  Anesth. Analg.     Publication Date:  2007 Apr 
Date Detail:
Created Date:  2007-03-22     Completed Date:  2007-04-12     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  1310650     Medline TA:  Anesth Analg     Country:  United States    
Other Details:
Languages:  eng     Pagination:  860-2     Citation Subset:  AIM; IM    
Department of Anesthesiology, University of Florida College of Medicine, Gainesville, Florida, USA.
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MeSH Terms
Anesthesia, Inhalation / instrumentation*
Equipment Design
Equipment Failure
Equipment Failure Analysis
Practice Guidelines as Topic
Ventilators, Mechanical*
Comment In:
Anesth Analg. 2007 Apr;104(4):990   [PMID:  17377122 ]

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

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