Staisch K, Nuwayhid B, Bauer R, Welsh L, Brinkman C R
Obstet Gynecol. 1976 May;47(5):587-92.
Fetal scalp and carotid PO2 were recorded continuously by polargraphic oxygen electrodes at several levels of maternal oxygenation. The results were compared to measurements obtained by intermittent blood samples using the radiometer blood gas analyzer. There was a good correlation between the PO2 values measured by the implanted oxygen electrodes and by conventional analyses of blood samples collected anaerobically. Electrode measurements differed from the control radiometer values by a mean of +/- 1.2 mmHg; 2 SD= +/- 2.50. Scalp PO2 recordings were lower but paralleled the carotid recordings under varying degrees of maternally inspired O2 concentrations. Thus scalp PO2 levels reflect closely those in the central fetal circulation. Administration of 95% O2 to the mother resulted in a 27% increase of scalp PO2 and a 29% increase in the carotid artery PO2 when compare to room air.
在母体不同氧合水平下，用极谱型氧电极连续记录胎儿头皮和颈动脉的氧分压（PO2）。将结果与使用Radiometer血气分析仪通过间歇性血样获得的测量值进行比较。植入式氧电极测得的PO2值与厌氧采集血样的传统分析结果之间具有良好的相关性。电极测量值与对照Radiometer值的平均差异为±1.2 mmHg；2个标准差为±2.50。在不同程度的母体吸入氧浓度下，头皮PO2记录值较低，但与颈动脉记录值平行。因此，头皮PO2水平密切反映胎儿中枢循环中的水平。与室内空气相比，给母亲吸入95%的氧气后，头皮PO2增加了27%，颈动脉PO2增加了29%。
