Quantitative analysis of contraction patterns in electrical activity signal of pregnant uterus as an alternative to mechanical approach
Quantitative analysis of contraction patterns in electrical activity signal of pregnant uterus as an alternative to mechanical approach
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DOI：
10.1088/0967-3334/26/5/014
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发表时间：
2005-10-01
影响因子：
3.2
通讯作者：
Wrobel, J
中科院分区：
文献类型：
--
作者：
Jezewski, J;Horoba, K;Wrobel, J
监测子宫收缩活动是一项重要的诊断也使用在怀孕和分娩期间。妊娠子宫对母体腹部施加的张力是通过外部地形照相测量的。然而，这种方法的局限性导致了另一种技术的发展-子宫电图-这是基于子宫电活动的记录。介绍了一种计算机辅助系统，该系统可以记录来自母体腹部的子宫电图信号，并在时域和频域上对其进行在线分析。作为研究材料，我们从一组妊娠37至40周的患者中获得了分娩前24小时内108个痕迹。由于可以同时记录子宫的机械和电活动，因此进行了子宫电图和地形图的比较研究。得到的结果表明，两种方法在识别为一致的收缩数方面表现出高度的一致性。但是，它们在定量描述公认模式方面的一致意见似乎不能将这些方法视为完全可替代的方法。进一步发展宫电图的适当途径似乎是频谱分析。利用子宫电图信号可以获得描述子宫肌电生理特性的几个频谱参数。
Monitoring of uterine contraction activity is an important diagnostic too] used during both pregnancy and labour. The strain the pregnant uterus exerts on the maternal abdomen is measured via external tocography. However, limitation of this approach has caused the development of another technique-electrohysterography-which is based on the recording of electrical uterine activity. A computer-aided system is presented, which allows the recording of electrohysterographic signals from the maternal abdomen and their online analysis both in time and frequency domains. As a research material, we acquired 108 traces during a 24 h period before labour from a group of patients between 37 and 40 weeks of gestation. The comparison study between electrohysterography and tocography was carried out thanks to the possibility of simultaneous recording of mechanical and electrical uterine activities. The obtained results show that both methods demonstrate high agreement in relation to the number of contractions recognized as being consistent. However, their agreement in relation to the quantitative description of recognized patterns has appeared to be unacceptable to consider these methods as fully alternative. The appropriate way of further development of electrohysterography seems to be spectral analysis. Several spectral parameters describing electrophysiological properties of uterine muscle can be obtained by the use of electrohysterographic signals.