Correlation of hemodynamic variables with transcutaneous PO2 measurements in critically ill adult patients.
Correlation of hemodynamic variables with transcutaneous PO2 measurements in critically ill adult patients.
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发表时间：
1985-11
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通讯作者：
R. Reed;R. Maier;D. Landicho;M. Kenny;C. Carrico
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作者：
R. Reed;R. Maier;D. Landicho;M. Kenny;C. Carrico
使用微型加热电极进行经皮氧分压 (PtcO2) 监测已被证明可以无创地连续跟踪稳定婴儿的动脉氧分压 (PaO2)。然而，在不稳定的成人中，两者之间的相关性不太明显，并且 PtcO2 似乎还受到灌注的影响。在 19 名危重成年患者中评估了 PtcO2 检测心脏指数 (CI) 变化的能力。研究发现 PtcO2 受到 PaO2、CI 和局部血管张力的影响，并且对这些变量的变化具有快速响应时间。 PtcO2 读数的所有改善均与 PaO2 或血流动力学状态的改善相关。由于其高灵敏度，连续无创 PtcO2 监测应可减少常规 PaO2 和 CI 测定。然而，PtcO2 的降低需要立即深入评估患者的 PaO2 和 CI，因为其缺乏特异性。
Transcutaneous oxygen (PtcO2) monitoring with miniaturized heated electrodes has been shown to continuously track arterial oxygen tension (PaO2) noninvasively in stable infants. However, the correlation between the two is less marked in unstable adults, and PtcO2 appears to be additionally influenced by perfusion. The ability of PtcO2 to detect alterations in cardiac index (CI) was evaluated in 19 critically ill adult patients. The PtcO2 was found to be influenced by the PaO2, the CI, and local vascular tone, with a rapid response time to changes in these variables. All instances of improvement in PtcO2 readings were associated with improvement in PaO2 or hemodynamic status. Because of its high sensitivity, continuous noninvasive PtcO2 monitoring should allow reduction in routine PaO2 and CI determinations. However, a decrease in PtcO2 requires immediate in-depth evaluation of the patient's PaO2 and CI because of its lack of specificity.