Matsen F A, Wyss C R, Robertson C L, Oberg P A, Holloway G A
Surg Gynecol Obstet. 1984 Nov;159(5):418-22.
Transcutaneous PO2 and laser Doppler measurements were made over areas of unheated and heated skin of the feet of normal volunteers. Stepwise elevation of the foot above the level of the heart systematically reduced the local arterial pressure and, thus, the local arteriovenous gradient in these areas. Results indicated that transcutaneous PO2 and laser Doppler measurements reflect changes in local arteriovenous gradient when made over areas of warmed skin, but not unwarmed skin. Comparison of skin surface and subcutaneous temperatures obtained with two heater types revealed the importance of heater configuration. Results confirm a previously hypothesized nonlinear relationship between transcutaneous PO2 and local cutaneous blood flow and indicate that a transcutaneous PO2 reading of zero may be obtained in the presence of significant local cutaneous blood flow.
对正常志愿者足部未加热和加热皮肤区域进行经皮氧分压（PO2）和激光多普勒测量。将足部逐步抬高至心脏水平以上，会系统性地降低这些区域的局部动脉压，进而降低局部动静脉压差。结果表明，在温暖皮肤区域进行经皮PO2和激光多普勒测量时，能反映局部动静脉压差的变化，但在未温暖皮肤区域则不能。比较两种加热器类型所获得的皮肤表面温度和皮下温度，揭示了加热器配置的重要性。结果证实了先前假设的经皮PO2与局部皮肤血流之间的非线性关系，并表明在存在显著局部皮肤血流的情况下，经皮PO2读数可能为零。
