Strong T H, Paul R H, Park G D, Cheng Y, Lewis D E, McCart D F, Mueller E A
Department of Obstetrics and Gynecology, University of Southern California School of Medicine, Los Angeles.
Am J Obstet Gynecol. 1991 May;164(5 Pt 1):1233-4. doi: 10.1016/0002-9378(91)90689-o.
An intrauterine probe electrode was inserted into 100 laboring women and 366 bipolar electrode combinations were tested. A noise-cancelling technique was used with the final 28 subjects to remove competing maternal cardiac signals. Twenty-four (86%) had fetal heart rate tracings with sufficient technical quality to allow determination of the baseline fetal heart rate.
将宫内探头电极插入100名正在分娩的妇女体内，并测试了366个双极电极组合。对最后28名受试者使用了一种噪声消除技术，以去除母体心脏的竞争信号。24名（86%）受试者的胎儿心率描记图具有足够的技术质量，能够确定胎儿心率基线。
