产前胎儿脉搏血氧饱和度测定法。
Antepartum fetal pulse oximetry.
作者信息
Lewinsky R M, Fine I
机构信息
Department of Obstetrics and Gynecology, Bnai Zion Medical Center, Technion Institute of Technology, Haifa, Israel.
出版信息
Eur J Obstet Gynecol Reprod Biol. 1997 Mar;72 Suppl:S81-5. doi: 10.1016/s0301-2115(97)02723-1.
OBJECTIVE
To examine the feasibility of antepartum fetal pulse oximetry by using a specially designed probe.
STUDY DESIGN
Twenty multiparous patients at term planned for induction of labor. The probe was passed through the cervix and held against the fetal scalp. Two laser diodes provided light in the near-infrared spectral region. Only reflected signals of both wavelengths which were consistent in pulse frequency and phase and with an AC/DC ratio of > 0.02% were considered usable.
RESULTS
Usable measurements were obtained in 16 out of 20 cases. Overall usable signal time was 45% (range 30.2-61.5%). There was no accidental rupture of membranes. Mean fetal oxygen saturation was 76.1 +/- 6.2%.
CONCLUSIONS
This study has shown that antepartum fetal pulse oximetry is feasible once a specially designed probe and signal analysis system are used.
目的
通过使用专门设计的探头来检验产前胎儿脉搏血氧饱和度测定法的可行性。
研究设计
20名足月计划引产的经产妇。将探头经宫颈插入并紧贴胎儿头皮。两个激光二极管在近红外光谱区域提供光线。只有两个波长的反射信号在脉冲频率和相位上一致且交流/直流比率>0.02%时才被视为可用。
结果
20例中有16例获得了可用测量值。总体可用信号时间为45%（范围30.2 - 61.5%）。未发生胎膜意外破裂。胎儿平均血氧饱和度为76.1±6.2%。
结论
本研究表明，一旦使用专门设计的探头和信号分析系统，产前胎儿脉搏血氧饱和度测定法是可行的。
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