Eliminating the effect of water vapor in respiratory gas analysis.
An apparatus is described that removes water vapor from expired gas samples. By humidifying and cooling the sampled gas, the final water vapor partial pressure becomes independent of initial water content. The system has particular application to oxygen measurements.
D004865:Equipment and Supplies, Hospital; D006801:Humans; D008991:Monitoring, Physiologic / Q000295:instrumentation*; D010100:Oxygen; D012122:Ventilators, Mechanical / Q000592:standards*; D014835:Volatilization