[Transcutaneous determination of partial oxygen pressure and local blood flow in human orthostatic exposure].

Using a Dräger oximeter (the FRG) modified by a Clark polarographic electrode, transdermal measurements of partial pressure of oxygen (PtdO2) and local blood flow (Q) were carried out in 46 test subjects during tilt tests (20 min). As a result of blood redistribution, at minute 1 Q increased significantly in the lower body (p less than 0.01) and decreased in the upper body (p less than 0.01). Regardless of the sensor location, PtdO2 increased in most cases.