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A method is described for measuring metabolic gas exchange during general anaesthesia using a respiratory mass spectrometer, a mixing box and two inert tracer gases. Measurement of inspired and expired minute volume is possible to within 2%; oxygen consumption, carbon dioxide output and respiratory quotient can be measured to within 10%.
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| http://dx.doi.org/10.1093/bja/53.1.73 | DOI Listing |
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