Document Detail


Active humidification with Boussignac Continuous Positive Airway Pressure (CPAP): In Vitro Study of a New Method.
MedLine Citation:
PMID:  22906896     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
BACKGROUND: The objective of this study is to carry out an in vitro study of Boussignac CPAP performance with a new humidification method using a heated humidifier. METHODS: Two heated humidifiers are evaluated: MR 850 (MR) and Kendall Aerodyne 2000 (AD). Baseline measurements were taken in all experimental conditions without humidification. The Boussignac valve was adapted to the input of the humidification chamber. The system was connected to a test lung to assess the degree of pressurization. Hygrometric and pressure measurements were performed with the following gas flows (GF): 10, 20, 30 and 40 L/min. RESULTS: The mean values of pressure generated by the Boussignac valve were 1.99±0.018, 6.97±0.047, 16.61±0.083 and 21.24±0.076 cmH₂O, 10, 20, 30 and 40 L/min of GF respectively, no differences being detected between study groups. Overall absolute humidity (AH) was significantly greater with a HH than without humidification (range 40.01±0.57-25.46±0.49 compared to 0.16±0.13 mgH₂O/L, p <.001). AH was significantly higher in AD compared to MR, regardless of the selected temperature and GF (p <.001). Conslusions: This new method of Boussignac CPAP humidification yields humidity values above 25 mg H₂O/L regardless of the HH and GF used. Pressurization values remained constant in each experimental situation and were not influenced by adding humidification. These data open up the possibility of using Boussignac CPAP on different types of patients, with different interfaces and for long periods of time.
Authors:
Jose M Alonso-Iñigo; Amadeo Almela; Alejandro Albert; José M Carratalá
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-8-16
Journal Detail:
Title:  Respiratory care     Volume:  -     ISSN:  0020-1324     ISO Abbreviation:  Respir Care     Publication Date:  2012 Aug 
Date Detail:
Created Date:  2012-8-21     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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