Solar-powered oxygen delivery: Proof of concept

H. Turnbull, A. Conroy, R. O. Opoka, S. Namasopo, K. C. Kain, M. Hawkes

Research output: Contribution to journalArticlepeer-review

27 Citations (Scopus)

Abstract

Setting: A resource-limited paediatric hospital in Uganda. OBJECTIVE: Pneumonia is a leading cause of child mortality worldwide. Access to life-saving oxygen therapy is limited in many areas. We designed and implemented a solar-powered oxygen delivery system for the treatment of paediatric pneumonia. DESIGN: Proof-of-concept pilot study. A solar-powered oxygen delivery system was designed and piloted in a cohort of children with hypoxaemic illness. RESULT S: The system consisted of 25 × 80 W photovoltaic solar panels (daily output 7.5 kWh [range 3.8-9.7kWh]), × 3 220 Ah batteries and a 300 W oxygen concentrator (output up to 5 l/min oxygen at 88% [±2%] purity). A series of 28 patients with hypoxaemia were treated with solar-powered oxygen. Immediate improvement in peripheral blood oxygen saturation was documented (median change12% [range 5-15%], P < 0.0001). Tachypnoea, tachycardia and composite illness severity score improved over the first 24 h of hospitalisation (P < 0.01 for all comparisons). The case fatality rate was 6/28 (21%). The median recovery times to sit, eat, wean oxygen and hospital discharge were respectively 7.5 h, 9.8 h, 44 h and 4 days. CONCLUS ION: Solar energy can be used to concentrate oxygen from ambient air and oxygenate children with respiratory distress and hypoxaemia in a resourcelimited setting.

Original languageEnglish
Pages (from-to)696-703
Number of pages8
JournalInternational Journal of Tuberculosis and Lung Disease
Volume20
Issue number5
DOIs
Publication statusPublished - 1 May 2016
Externally publishedYes

Keywords

  • Child
  • Hypoxaemia
  • Oxygen
  • Pneumonia
  • Solar energy

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