Fig. 3

The MPR bridges power failures in Kenyan children receiving oxygen therapy. a, c In two representative patients, oxygen flowrate (black line) and peripheral oxygen saturation (spot check, green circles) were maintained through several power cuts, including cuts lasting > 30 min. b, d MPR output flowrate (black line) and tank pressure (blue line) through the longest power cuts. Flow was maintained during the power cut. The MPR pressure dropped as expected during power cut and rose again with tank filling when power returned