Johnson N, Johnson V A, McNamara H, Montague I A, Jongsma H W, Aumeerally Z, Gupta J K, van Oudgaarden E, Lilford R J, Miller D
Department of Obstetrics and Gynaecology, King Edward Hospital, Perth.
Aust N Z J Obstet Gynaecol. 1994 Aug;34(4):428-32. doi: 10.1111/j.1479-828x.1994.tb01263.x.
Experimental pulse oximetry devices, similar to the existing systems used in adult and neonatal monitoring, can be used on the fetus to provide safe, and rapid information about oxygenation. They have been calibrated using fetal lambs and validated in human cross-sectional studies. Experiments have shown that fetal oxygen saturation decreases during normal labour, and drops after a uterine contraction especially with oxytocin-induced tachysystole. When the mother is given oxygen the fetal oxygen saturation increases. Readings are effected by caput and movement, and trends seem to be more meaningful than absolute values. Pulse oximetry can predict fetal outcome and a normal oxygen saturation result is specific for a good outcome perhaps even if the CTG is abnormal. However the technique is still experimental and there is insufficient data to support its use as a replacement for fetal blood sampling or a discriminator for an abnormal fetal heart trace.
类似于用于成人和新生儿监测的现有系统的实验性脉搏血氧测定设备，可用于胎儿，以提供有关氧合的安全、快速信息。它们已使用胎羊进行校准，并在人体横断面研究中得到验证。实验表明，在正常分娩期间胎儿氧饱和度会降低，尤其是在子宫收缩后，特别是在催产素引起的子宫收缩过速时会下降。当给母亲吸氧时，胎儿氧饱和度会增加。读数受胎头和胎动影响，趋势似乎比绝对值更有意义。脉搏血氧测定可预测胎儿结局，即使CTG异常，正常的氧饱和度结果也可能预示良好结局。然而，该技术仍处于实验阶段，没有足够的数据支持将其用作胎儿采血的替代方法或异常胎儿心率图的鉴别手段。
