McDowell J W, Thiede W H
Chest. 1980 Dec;78(6):853-5. doi: 10.1378/chest.78.6.853.
The usefulness of the transcutaneous Po2 monitor for monitoring during stress testing was evaluated. Seventy-five simultaneous recordings of arterial and transcutaneous Po2 were made on 11 patients with chronic obstructive pulmonary disease while they were undergoing treadmill exercise testing. All arterial blood samples were drawn from an indwelling brachial arterial line and analyzed in duplicate. The range of arterial Po2 measured was 50 to 145 mm Hg. The correlation coefficient (relationship between arterial and transcutaneous Po2) was .96 and the slope of the best fit line was 1.047 (Y = 1.047 x -7.2). The transcutaneous Po2 was an average of 5.99 +/- 4.76 mm Hg below the arterial Po2 in the entire group. The mean difference in transcutaneous and arterial Po2 was greater at low Po2 level, than at high levels. We found the electrode easy to maintain and calibrate, with a low frequency of malfunction. This instrument provides a safe, simple, and reliable noninvasive method for recording serial changes in Po2 during exercise testing.
对经皮氧分压监测仪在压力测试期间进行监测的效用进行了评估。在11例慢性阻塞性肺疾病患者进行跑步机运动测试时，同时记录了75次动脉血氧分压和经皮氧分压。所有动脉血样本均从留置的肱动脉导管抽取，并进行双份分析。测得的动脉血氧分压范围为50至145毫米汞柱。相关系数（动脉血氧分压与经皮氧分压之间的关系）为0.96，最佳拟合线的斜率为1.047（Y = 1.047x - 7.2）。在整个组中，经皮氧分压平均比动脉血氧分压低5.99 +/- 4.76毫米汞柱。经皮氧分压与动脉血氧分压的平均差异在低氧分压水平时比在高氧分压水平时更大。我们发现该电极易于维护和校准，故障频率低。该仪器为运动测试期间记录氧分压的系列变化提供了一种安全、简单且可靠的非侵入性方法。
