Maesel A, Mårtensson L, Gudmundsson S, Marsál K
Department of Obstetrics and Gynecology, University of Lund, Malmö, Sweden.
Acta Obstet Gynecol Scand. 1996 Feb;75(2):144-8. doi: 10.3109/00016349609033307.
During recent years fetal pulse oximetry has been under development for use in monitoring fetal oxygenation during labor. In a methodological study we have tested the practical applicability of one type of sensor (FS-10 Oxisensor, Nellcor). Both obstetricians and midwives took active part in sensor placement. The readings of fetal arterial oxygen saturation (SpO2) were not taken into account when managing the patients.
Oxygenation was monitored during labor in 96 singleton pregnancies. Mean SpO2 levels were calculated when cervical dilatation was 4-7 cm and 8-10 cm, and in the second stage of labor. Student's t-test was used for paired comparisons. A p-value<0.05 was considered significant.
Of the 96 oxisensors, 91 (95%) were successfully placed. One mother felt pain which disappeared when the sensor was removed. Two of the newborns manifested an impression mark caused by the sensor, which disappeared completely within a day. No infection or increased bleeding was noted. The mean recording time was 134 minutes. SpO2-values were obtainable during 69% of the recording time. A significant fall of mean SpO2 occurred between the first and second stages of labor.
The method seems to be harmless for mother and child, and allows SpO2-values to be obtained during two thirds of the recording period. Further research is needed to evaluate the possible clinical value of the method.
近年来，胎儿脉搏血氧饱和度测定技术一直在研发中，用于分娩期间监测胎儿氧合情况。在一项方法学研究中，我们测试了一种传感器（FS - 10氧传感器，Nellcor）的实际适用性。产科医生和助产士都积极参与了传感器的放置。在处理患者时，未考虑胎儿动脉血氧饱和度（SpO2）的读数。
对96例单胎妊娠产妇在分娩期间进行氧合监测。计算宫颈扩张4 - 7厘米、8 - 10厘米时以及第二产程中的平均SpO2水平。采用配对t检验进行比较。p值<0.05被认为具有统计学意义。
96个氧传感器中，91个（95%）成功放置。1名母亲感到疼痛，传感器移除后疼痛消失。2名新生儿出现了由传感器引起的压痕，1天内完全消失。未发现感染或出血增加。平均记录时间为134分钟。在69%的记录时间内可获得SpO2值。第一产程和第二产程之间平均SpO2显著下降。
该方法似乎对母婴无害，且在三分之二的记录期内可获得SpO2值。需要进一步研究以评估该方法可能的临床价值。
