Skillern L, Cockburn J, Benjamin M, Pearce J M, Sahota D, Reed N, Mohajer M, James D, Symonds M
St. George's Hospital, London.
Br J Obstet Gynaecol. 1994 Jul;101(7):582-6. doi: 10.1111/j.1471-0528.1994.tb13647.x.
To compare the T:QRS ratio recorded by the STAN and Nottingham fetal electrocardiogram (FECG) monitors.
Prospective observational study.
London teaching hospital delivery suite and research unit.
The T:QRS ratios generated by the STAN and Nottingham FECG monitors were simultaneously recorded and compared using signals generated from a computer-produced ECG signal and signals from 11 term fetuses recorded during labour.
There was an acceptable level of agreement between the two systems with the computer-generated signals, but it was not clinically acceptable with the signals from the fetuses recorded during labour. Disagreements in the T:QRS values were probably due to differences in the reference points for the measurement of the S-T segment and T-wave height.
The different points of reference for measurement of S-T segment and T-wave height can explain poor agreement between the two methods of FECG waveform analysis. The suggested adopted points of reference are those corresponding to adult electrocardiographic methodology.
比较STAN和诺丁汉胎儿心电图（FECG）监护仪记录的T:QRS比值。
前瞻性观察性研究。
伦敦教学医院分娩套房及研究单位。
使用计算机生成的心电图信号以及分娩期间记录的11例足月胎儿的信号，同时记录并比较STAN和诺丁汉FECG监护仪生成的T:QRS比值。
对于计算机生成的信号，两种系统之间的一致性水平尚可，但对于分娩期间记录的胎儿信号，其一致性在临床上不可接受。T:QRS值的差异可能是由于S-T段和T波高度测量的参考点不同所致。
S-T段和T波高度测量的不同参考点可以解释两种FECG波形分析方法之间一致性较差的原因。建议采用的参考点是与成人心电图方法相对应的那些点。
