| Acute severe asthma: performance of ventilator at simulated altitude. | |
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MedLine Citation:
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PMID: 20679899 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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OBJECTIVE: Exacerbation of asthma can be seen during air transport. Severe patients, not responding to conventional therapy, require ventilator support. We evaluated the performance of two transport ventilators, built with turbine technology, the T-birdVSO2 and the LTV-1000, for use during aeromedical evacuation of acute severe asthma. We have assessed the ability of both the ventilators to deliver to an acute severe asthma model a tidal volume (Vt) set at different simulated altitudes, by changing the ambient air pressure. METHODS: The simulated cabin altitudes were 1500, 2500, and 3000 m (decompression chamber). Vt was set at 700 and 400 ml in an acute severe asthma lung model. Comparisons of the preset with the actual measured values were accomplished using a t-test. RESULTS: Comparisons between the actual delivered Vt and set Vt showed a significant difference starting at 1500 m for both the ventilators. The T-birdVSO2 showed a decrease in the volume delivered, with a negative variation of more than 10% compared with the Vt set. The LTV-1000 showed mostly an increase in the volume delivered. The delivered Vt remained within 10% of the set Vt. CONCLUSION: The accuracy of Vt delivery was superior with the LTV-1000 than with the T-birdVSO2, but the higher delivered Vt of the LTV-1000 are likely to be more harmful than lower delivered Vt of the T-birdVSO2. |
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Authors:
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Jean-Pierre Tourtier; Emma Forsans; Thomas Leclerc; Nicolas Libert; Solange Ramsang; Karim Tazarourte; Michel Man; Marc Borne |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: European journal of emergency medicine : official journal of the European Society for Emergency Medicine Volume: 18 ISSN: 1473-5695 ISO Abbreviation: Eur J Emerg Med Publication Date: 2011 Apr |
Date Detail:
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Created Date: 2011-03-09 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9442482 Medline TA: Eur J Emerg Med Country: England |
Other Details:
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Languages: eng Pagination: 77-80 Citation Subset: IM |
Affiliation:
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aDepartment of Anesthesia and Intensive Care, Military Hospital Val-de-Grace, Paris bSAMU, Hospital Marc-Jacquet, Melun, France. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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