2nd Department of Gynecology and Obstetrics, Wroclaw Medical Univesity, Poland.
Lukasiewicz Research Network, Institute of Medical Technology and Equipment, Zabrze, Poland.
Ginekol Pol. 2021;92(3):183-187. doi: 10.5603/GP.a2021.0025. Epub 2021 Mar 23.
To analyze and compare the bioelectric and mechanical activity of the uterus in pregnant women with threatening preterm delivery treated with tocolysis. Additionally, auxiliary parameters of the bioelectric signal, as registered by electrohysterography and characteristic only for this method, were measured and analyzed.
Forty-five women with pregnancies from 24 to 36 weeks of gestation with typical clinical symptoms of threatening preterm delivery were given tocolytic therapy. Registration and analysis of bioelectric activity with electrohysterography was performed simultaneously with registration and analysis of mechanical activity with tocography.
After administration of tocolytic treatment, the presence of bioelectric activity was accompanied by the lack of or minimal occurrence of mechanical activity. All parameters of contraction recorded by electrohysterography had significantly greater values than those recorded by tocography.
Measurement of bioelectric activity is more sensitive than measurement of mechanical activity of the uterus. Elevated bioelectric activity of the uterine muscle was observed despite the use of tocolysis, a lack of symptoms of threatening preterm delivery, as well as a lack of contraction in tocography. The presence of bioelectric activity may precede the occurrence of mechanical activity of the uterus, but further research is required on larger groups of patients.
分析和比较接受保胎治疗的有早产先兆的孕妇的子宫生物电和机械活动。此外，还测量和分析了电子宫描记术记录的生物电信号的辅助参数，这是该方法特有的。
45 名妊娠 24 至 36 周的孕妇出现典型的早产先兆临床症状，给予保胎治疗。同时进行电子宫描记术的生物电活动记录和分析，以及胎儿图的机械活动记录和分析。
保胎治疗后，有生物电活动存在，但机械活动很少或没有。电子宫描记术记录的所有收缩参数值均显著大于胎儿图记录的值。
与子宫机械活动的测量相比，生物电活动的测量更敏感。尽管使用了保胎治疗、早产先兆症状不明显以及胎儿图没有收缩，但仍观察到子宫肌肉的生物电活动升高。生物电活动的出现可能先于子宫机械活动的发生，但需要对更大的患者群体进行进一步的研究。
