| Achieving an adequate minute volume through a 2 mm transtracheal catheter in simulated upper airway obstruction using a modified industrial ejector. | |
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MedLine Citation:
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PMID: 20100697 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND: Needle cricothyrotomy and subsequent transtracheal jet ventilation (TTJV) is one of the last options to restore oxygenation while managing an airway emergency. However, in cases of complete upper airway obstruction, conventional TTJV is ineffective and dangerous. We transformed a small, industrial ejector into a simple, manual ventilator providing expiratory ventilation assistance (EVA). METHODS: An ejector pump was modified to allow both insufflation of oxygen and jet-assisted expiration through an attached 75 mm long transtracheal catheter (TTC) with an inner diameter (ID) of 2 mm by alternately occluding and releasing the gas outlet of the ejector pump. In a lung simulator, the modified ejector pump was tested at different compliances and resistances. Inspiration and expiration times were measured and achievable minute volumes (MVs) were calculated to determine the effect of EVA. RESULTS: The modified ejector pump shortened the expiration time and an MV up to 6.6 litre min(-1) could be achieved through a 2 mm ID TTC in a simulated obstructed airway. CONCLUSIONS: The principle of ejector-based EVA seems promising and deserves further evaluation. |
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Authors:
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A E W Hamaekers; T G?tz; P A J Borg; D Enk |
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Publication Detail:
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Type: Evaluation Studies; Journal Article; Research Support, Non-U.S. Gov't Date: 2010-01-24 |
Journal Detail:
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Title: British journal of anaesthesia Volume: 104 ISSN: 1471-6771 ISO Abbreviation: Br J Anaesth Publication Date: 2010 Mar |
Date Detail:
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Created Date: 2010-02-12 Completed Date: 2010-03-18 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0372541 Medline TA: Br J Anaesth Country: England |
Other Details:
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Languages: eng Pagination: 382-6 Citation Subset: IM |
Affiliation:
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Department of Anaesthesia, Maastricht University Medical Centre, PO Box 5800, 6202 AZ Maastricht, The Netherlands. a.hamaekers@mumc.nl |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Airway Obstruction / therapy* Airway Resistance Emergencies Equipment Design Exhalation High-Frequency Jet Ventilation / instrumentation Humans Models, Anatomic Ventilators, Mechanical* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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