| Noninvasive CPAP With Face Mask: Comparison Among New Venturi Devices and the Boussignac® Valve. | |
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MedLine Citation:
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PMID: 22709435 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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BACKGROUND: Performances of two non-invasive CPAP systems (Ventumask high and low flow) were compared with Boussignac® in three different scenarios. METHODS: Scenario 1, pneumatic lung simulator with a tachypnea pattern (800mL × 40/min). Scenario 2, ten healthy subjects studied during tidal breaths and tachypnea. Scenario 3, twenty ICU patients enrolled for a non-invasive CPAP session. Differences between set and effective CPAP level and FiO₂ as well as the lowest airway pressure and the pressure swing around imposed CPAP level were analyzed . Lowest airway pressure and swing were correlated to pressure-time product (areaPaw) measured with simulator. PaO₂ was a patients' further performance index. RESULTS: Lung simulator: Boussignac® FiO₂ was 0.54 even if supplied with pure oxygen. Ventumasks had higher swing than Boussignac® (p=0.007). Pressure-time product correlated better with pressure swing (=0.97) than with lowest airway pressure (=0.92). In healthy subjects, Ventumask high flow showed lower difference between set and effective FiO₂ (p<0.001), and lowest airway pressure (p<0.001) compared to Boussignac®. In all measurements, Boussignac® showed higher-than-imposed CPAP level (p<0.001). In patients, Ventumask high flow had lower swing than Boussignac® (p=0.03) with similar PaO₂ increase. CONCLUSIONS: Ventumask high flow showed the best performance in human subjects. During high flow demand, Boussignac® delivered lower than expected FiO₂ and showed higher dynamic hyper-pressurization than Ventumasks. |
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Authors:
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G Mistraletti; M Giacomini; G Sabbatini; R Pinciroli; E Mantovani; M Umbrello; D Palmisano; A Destrebecq; P Formenti; G Iapichino |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-6-15 |
Journal Detail:
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Title: Respiratory care Volume: - ISSN: 0020-1324 ISO Abbreviation: - Publication Date: 2012 Jun |
Date Detail:
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Created Date: 2012-6-19 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7510357 Medline TA: Respir Care Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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