在体外循环期间通过质谱仪测量氧气摄取和二氧化碳交换。
Mass spectrometer measurement of oxygen uptake and carbon dioxide exchange during cardiopulmonary bypass.
作者信息
Abbott T R, Goodwin B, Clark G, Rees G J
出版信息
Br J Anaesth. 1980 Jan;52(1):29-40. doi: 10.1093/bja/52.1.29.
Oxygen uptake (VO2) and carbon dioxide output (VCO2) were measured continuously in four children during cardiopulmonary bypass, using the variation in concentration of a tracer gas, argon, as a measure of flow, and a mass spectrometer to monitor gas concentrations. Normal values for the ratio of VCO2:VO2 (= 0.8) indicated that gas exchange equilibrium had been established following sudden changes in body temperature. During rapid cooling, 10% carbon dioxide is necessary to ensure carbon dioxide homeostasis within the body.
在体外循环期间，对四名儿童连续测量了氧摄取量（VO₂）和二氧化碳排出量（VCO₂），使用示踪气体氩浓度的变化作为流量的度量，并使用质谱仪监测气体浓度。VCO₂:VO₂比值的正常值（= 0.8）表明，在体温突然变化后已建立气体交换平衡。在快速降温期间，需要10%的二氧化碳以确保体内二氧化碳稳态。
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