A Low-Resource Oxygen Blender Prototype for Use in Modified Bubble CPAP Circuits: Results from Design Feasibility Workshops-Reference-Cited by-同舟云学术

A Low-Resource Oxygen Blender Prototype for Use in Modified Bubble CPAP Circuits: Results from Design Feasibility Workshops

Published:2022-09-14 Issue:3 Volume:107 Page:724-727
ISSN:0002-9637
Container-title:The American Journal of Tropical Medicine and Hygiene
language:
Short-container-title:

Author:

Wu Andrew G.¹,Luch Sreyleak²,Floersch Jared R.³,Keester Adam³,Slusher Tina M.⁴⁵⁶,Fischer Gwenyth A.⁵,Hale Joseph E.⁷,Bjorklund Ashley R.⁴⁵⁶

Affiliation:

1. Division of Critical Care Medicine, Boston Children’s Hospital, Boston, Massachusetts;

2. Chenla Children’s Healthcare, Kratie, Krong Kracheh, Cambodia;

3. Department of Mechanical Engineering, University of Minnesota, Minneapolis, Minnesota;

4. Department of Pediatrics Global Pediatrics, University of Minnesota, Minneapolis, Minnesota;

5. Department of Pediatrics Pediatric Critical Care Medicine, University of Minnesota, Minneapolis, Minnesota;

6. Department of Pediatrics, Hennepin Healthcare, Minneapolis, Minneapolis;

7. Technological Leadership Institute, University of Minnesota, Minneapolis, Minnesota

Abstract

ABSTRACT. Bubble CPAP is used in low-resource settings to support children with pneumonia. Low-cost modifications of bubble CPAP using 100% oxygen introduces the risk of hyperoxia. Our team developed a low-cost, readily constructible oxygen blender to lower the oxygen concentration. The next step in development was to test its construction among new users and ascertain three outcomes: construction time, outflow oxygen concentration, and an assessment of the user experience. Workshops were conducted in two countries. Instructions were delivered using a live demonstration, a video, and written instructions in the respective native language. Twelve volunteers participated. Average construction times were 24 minutes for the first attempt and 15 minutes for the second. The oxygen concentrations were 53–63% and 41–51% for the 5 and 10 mm entrainment ports, respectively. This novel, low-cost oxygen blender for bubble CPAP can be constructed among new users with reliable performance across devices.

Publisher

American Society of Tropical Medicine and Hygiene

Subject

General Medicine

Link

https://www.ajtmh.org/downloadpdf/journals/tpmd/107/3/article-p724.xml

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