产时心率不明确：胎心监护图和腹部胎儿心电图与母亲心电图的比较。
Intrapartum heart rate ambiguity: a comparison of cardiotocogram and abdominal fetal electrocardiogram with maternal electrocardiogram.
机构信息
Department of Obstetrics and Gynaecology, Faculty of Medicine, Johann Wolfgang Goethe University Frankfurt am Main, Frankfurt am Main, Germany.
出版信息
Gynecol Obstet Invest. 2013;75(2):101-8. doi: 10.1159/000345059. Epub 2013 Jan 17.
OBJECTIVE/AIMS: To investigate the presence of signal ambiguity of intrapartum fetal heart rate (FHR) monitoring during delivery by comparing simultaneous cardiotocogram (CTG), abdominal fetal electrocardiogram (ECG) with continuous maternal ECG.
METHODS
A total of 144 simultaneous CTG (Corometrics 250 series), abdominal fetal ECG (Monica -AN24™) and maternal ECG (Monica AN24™) recordings were evaluated.
MAIN OUTCOME MEASURES
When the FHR is within 5 bpm of the maternal heart rate (MHR) acquired from the ECG, it is classified as 'MHR/FHR ambiguity'. Statistical analyses were performed with Fisher's exact test and the Wilcoxon signed-rank test.
RESULTS
Comparison of abdominal fetal ECG against CTG demonstrates significantly less 'MHR/FHR ambiguity' in both the first stage (mean 0.70 vs. 1.22%, p < 0.001) and second stage of labour (mean 3.30 vs. 6.20%, p < 0.001).
CONCLUSION
Intrapartum FHR monitoring in daily practice via the CTG modality provides significantly more 'MHR/FHR ambiguity' than abdominal fetal ECG, which also provides additional information on the MHR.
目的/目标：通过比较同时的胎儿心电图（CTG）、腹部胎儿心电图（Monica-AN24™）和连续的母体心电图，来研究分娩过程中胎儿心率（FHR）监测的信号模糊性的存在。
方法
评估了总共 144 个同时的 CTG（Corometrics 250 系列）、腹部胎儿心电图（Monica-AN24™）和母体心电图（Monica AN24™）记录。
主要观察指标
当 FHR 与从 ECG 获得的母体心率（MHR）相差在 5 bpm 以内时，将其归类为“MHR/FHR 模糊”。Fisher 确切检验和 Wilcoxon 符号秩检验用于统计分析。
结果
与 CTG 相比，腹部胎儿心电图显示第一产程（平均 0.70%对 1.22%，p<0.001）和第二产程（平均 3.30%对 6.20%，p<0.001）中“MHR/FHR 模糊”明显较少。
结论
在日常实践中，通过 CTG 模式进行的分娩期间 FHR 监测比腹部胎儿心电图提供了明显更多的“MHR/FHR 模糊”，后者还提供了关于 MHR 的额外信息。
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