Comparison of Nasal Continuous Positive Airway Pressure Delivered by Seven Ventilators Using Simulated Neonatal Breathing

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Drevhammar, ThomasKarolinska Institutet (author)

Comparison of Nasal Continuous Positive Airway Pressure Delivered by Seven Ventilators Using Simulated Neonatal Breathing

Article/chapterEnglish2013

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2013
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LIBRIS-ID:oai:DiVA.org:uu-202453
https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-202453URI
https://doi.org/10.1097/PCC.0b013e31827212e4DOI
http://kipublications.ki.se/Default.aspx?queryparsed=id:126763838URI

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Language:English
Summary in:English

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Subject category:art swepub-publicationtype

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Objectives: Nasal continuous positive airway pressure (NCPAP) is an established treatment for respiratory distress in neonates. Most modern ventilators are able to provide NCPAP. There have been no large studies examining the properties of NCPAP delivered by ventilators. The aim of this study was to compare pressure stability and imposed work of breathing (iWOB) for NCPAP delivered by ventilators using simulated neonatal breathing. Design: Experimental in vitro study. Setting: Research laboratory in Sweden. Intervention: None. Measurements and Main Results: Neonatal breathing was simulated using a mechanical lung simulator. Seven ventilators were tested at different CPAP levels using two breath profiles. Pressure stability and iWOB were determined. Results from three ventilators revealed that they provided a slight pressure support. For these ventilators, iWOB could not be calculated. There were large differences in pressure stability and iWOB between the tested ventilators. For simulations using the 3.4-kg breath profile, the pressure swings around the mean pressure were more than five times greater, and iWOB more than four times higher, for the system with the highest measured values compared with the system with the lowest. Overall, the Fabian ventilator was the most pressure stable system. Evita XL and SERVO-i were found more pressure stable than Fabian in some simulations. The results for iWOB were in accordance with pressure stability for systems that allowed determination of this variable. Conclusions: Some of the tested ventilators unexpectedly provided a minor degree of pressure support. In terms of pressure stability, we have not found any advantages of ventilators as a group compared with Bubble CPAP, Neopuff, and variable flow generators that were tested in our previous study. The variation between individual systems is great within both categories. The clinical importance of these findings needs further investigation.

Subject headings and genre

MEDICIN OCH HÄLSOVETENSKAP Klinisk medicin Pediatrik hsv//swe
MEDICAL AND HEALTH SCIENCES Clinical Medicine Pediatrics hsv//eng
MEDICIN OCH HÄLSOVETENSKAP Klinisk medicin Anestesi och intensivvård hsv//swe
MEDICAL AND HEALTH SCIENCES Clinical Medicine Anesthesiology and Intensive Care hsv//eng
TEKNIK OCH TEKNOLOGIER Medicinteknik Medicinsk material- och protesteknik hsv//swe
ENGINEERING AND TECHNOLOGY Medical Engineering Medical Materials hsv//eng
continuous positive airway pressure
equipment design
infant
newborn
positive-pressure
respiration/instrumentation
work of breathing

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Nilsson, Kjell (author)
Zetterström, HenrikUppsala universitet,Anestesiologi och intensivvård(Swepub:uu)henze472 (author)
Jonsson, BaldvinKarolinska Institutet (author)
Karolinska InstitutetAnestesiologi och intensivvård (creator_code:org_t)

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In:Pediatric Critical Care Medicine14:4, s. E196-E2011529-75351947-3893

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MEDICAL AND HEALTH SCIENCES: MEDICAL AND HEAL ...; and Clinical Medicin ...; and Pediatrics

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