Document Detail

Noninvasive CPAP With Face Mask: Comparison Among New Venturi Devices and the Boussignac® Valve.
MedLine Citation:
PMID:  22709435     Owner:  NLM     Status:  Publisher    
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.
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:
Type:  JOURNAL ARTICLE     Date:  2012-6-15
Journal Detail:
Title:  Respiratory care     Volume:  -     ISSN:  0020-1324     ISO Abbreviation:  -     Publication Date:  2012 Jun 
Date Detail:
Created Date:  2012-6-19     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7510357     Medline TA:  Respir Care     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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