Anaesthesia and intensive care
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Anaesth Intensive Care · Feb 1980
An analysis of the performance of a variable venturi-type oxygen mask.
The theoretical performance of the Hudson Multivent mask is considered. A method is described of determining the flow-weighted mean inspired oxygen concentration produced by the mask. ⋯ At settings above 30% predictable function was found to be unlikely, whatever the supplied oxygen flow rate. Recommendations are made regarding the use of this device.