Gardosi J O, Schram C M, Symonds E M
Department of Obstetrics and Gynaecology, Queen's Medical Centre, Nottingham, UK.
Lancet. 1991 May 25;337(8752):1265-7. doi: 10.1016/0140-6736(91)92928-u.
Application of pulse oximetry to intrapartum monitoring was investigated in 105 women. No adequate reading could be obtained in 44 cases. Two major sources of artifact, related to probe apposition and signal processing, were identified and excluded. The average arterial oxygen saturation from the fetal scalp was 82% (SD 6%), which is higher than has been inferred from pO2 levels. Readings below 60% or the development of an unstable baseline suggest the presence of substantial hypoxia and acidosis.
对105名妇女进行了脉搏血氧饱和度测定在产时监测中的应用研究。44例未能获得足够的读数。识别并排除了与探头放置和信号处理相关的两个主要伪像来源。胎儿头皮的平均动脉血氧饱和度为82%（标准差6%），高于根据pO2水平推断的数值。读数低于60%或出现不稳定基线提示存在严重缺氧和酸中毒。
