Monaco F, McQuitty J C
Crit Care Med. 1981 Oct;9(10):756-8. doi: 10.1097/00003246-198110000-00018.
The authors measured the partial pressure of carbon dioxide transcutaneously (PtcCO2) in 15 sick newborns and compared the PtcCO2 to simultaneously measured partial pressure of arterial carbon dioxide (PaCO2). The PtcCO2 values reflected changes in the PaCO2 values. A linear regression on 106 paired PtcCO2 and PaCO2 values produced a correlation coefficient of 4 = 0.91 with a slope of 1.89 and a y-intercept of --9.4. The authors found the measurement of PtcCO2 to be a clinically useful method of continuously following the trend of PaCO2.
作者测量了15名患病新生儿的经皮二氧化碳分压（PtcCO2），并将PtcCO2与同时测量的动脉血二氧化碳分压（PaCO2）进行比较。PtcCO2值反映了PaCO2值的变化。对106对PtcCO2和PaCO2值进行线性回归分析，得出相关系数r = 0.91，斜率为1.89，y轴截距为-9.4。作者发现，测量PtcCO2是临床上连续跟踪PaCO2变化趋势的一种有用方法。
