| Performance of a hydrophobic heat and moisture exchanger at different ambient temperatures. | |
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MedLine Citation:
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PMID: 8227727 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: To evaluate the effect of different room temperatures on hydrophobic heat and moisture exchangers (HME) humidifying capability and efficiency. METHODS: Stock HMEs were tested in vitro using an already described test model, with separation of inspiratory and expiratory gas. Absolute humidity (AH) was measured by means of dry-wet dual thermocouple, and HME efficiency was computed as the ratio between expired to inspired AH, at room temperature of 20 and 26 degrees C. RESULTS: Inspired gas temperature and AH were significantly higher at 26 than at 20 degrees C; since expired AH remained substantially unchanged, HME efficiency was also higher in warmer environment. CONCLUSIONS: Hydrophobic HMEs appear to be affected by room temperature, increasing their humidifying ability and their efficiency with its rise. |
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Authors:
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M Croci; A Elena; M Solca |
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Publication Detail:
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Type: Comparative Study; Journal Article |
Journal Detail:
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Title: Intensive care medicine Volume: 19 ISSN: 0342-4642 ISO Abbreviation: Intensive Care Med Publication Date: 1993 |
Date Detail:
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Created Date: 1993-12-15 Completed Date: 1993-12-15 Revised Date: 2008-11-21 |
Medline Journal Info:
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Nlm Unique ID: 7704851 Medline TA: Intensive Care Med Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 351-2 Citation Subset: IM |
Affiliation:
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Servizio di Anestesia e Rianimazione, IRCCS Ospedale Maggiore, Milano, Italy. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Cold Temperature Evaluation Studies as Topic Filtration / instrumentation Hot Temperature Humidity Respiration, Artificial / instrumentation* Temperature* Time Factors |
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