| Accuracy of a Novel System for Oxygen Delivery to Small Children. | |
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MedLine Citation:
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PMID: 21727103 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Objective: Oxygen therapy for infants and small children in developing countries is often not available. Entrainment devices may provide an accurate and precise concentration of oxygen when used at the flow rates appropriate for infants and small children. Methods: A continuously adjustable entrainment device was tested to determine the concentrations and flows of oxygen delivered by using low inlet flow rates suitable for therapy for infants and small children and 3 distinct oxygen delivery systems that varied in their resistive load. Results: The use of long and large bore, low resistance tubing (similar to a mask) resulted in the delivery of oxygen concentrations that tracked closely (accurate and precise) to values indicated by the entrainment device. The directly connected system with lower resistance (similar to a hood) produced a similar profile of concentrations and flow rates to the large bore tubing but with even greater accuracy. The use of a long and narrow tubing with higher resistance (similar to a cannula) did not deliver accurate oxygen concentrations. In fact, this high-resistance system failed to work as intended, and instead of entraining air, a large proportion (sometimes >50%) of the oxygen delivered to the entrainment device was ejected through its vents. Conclusions: Entrainment devices can deliver accurate oxygen concentrations at low flow rates if used with low resistance delivery systems; however, entrainment devices are not suitable for use with high resistance delivery systems such as a standard nasal cannula. |
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Authors:
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Matthew Coghill; Namasivayam Ambalavanan; Robert L Chatburn; Patricia L Hibberd; Linda L Wright; Waldemar A Carlo; |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-7-4 |
Journal Detail:
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Title: Pediatrics Volume: - ISSN: 1098-4275 ISO Abbreviation: - Publication Date: 2011 Jul |
Date Detail:
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Created Date: 2011-7-5 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0376422 Medline TA: Pediatrics Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Department of Pediatrics, University of Alabama at Birmingham, Birmingham, Alabama; |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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