Objective: To compare the accuracy and reliability of uterine contraction identification from maternal abdominal electrohysterogram and tocodynamometer with an intrauterine pressure transducer.Methods: Seventy-four term parturients had uterine contractions monitored simultaneously with electrohysterography, tocodynamometry, and intrauterine pressure measurement.Results: Electrohysterography was more reliable than tocodynamometry when compared to the intrauterine method (97.1 versus 60.9 positive percent agreement; P < 0.001). The root mean square error was lower for electrohysterography than tocodynamometry in the first stage (0.88 versus 1.22 contractions/10 minutes; P < 0.001), and equivalent to tocodynamometry in the second. The positive predictive values for tocodynamometry and electrohysterography (84.1% versus 78.7%) were not significantly different, nor were the false positive rates (21.3% versus 15.9%; P = 0.052). The sensitivity of electrohysterography was superior to that of tocodynamometry (86.0 versus 73.6%; P < 0.001).Conclusion: The electrohysterographic technique was more reliable and similar in accuracy to tocodynamometry in detecting intrapartum uterine contractions.
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机译：目的：比较产妇腹部电宫图和宫腔内压力计与宫腔测力计进行子宫收缩鉴别的准确性和可靠性。方法：对74名足月产妇进行子宫电图，宫位功率测定和宫腔内压力监测，同时监测子宫收缩。与宫腔内测力法相比，其可靠性更强（97.1比60.9阳性百分比; P <0.001）。在第一个阶段，电波宫腔照相术的均方根误差低于测功法（0.88对1.22收缩/ 10分钟; P <0.001），在第二个阶段等效于测功法。测功和子宫电图的阳性预测值（84.1％/ 78.7％）无显着差异，假阳性率也没有显着差异（21.3％/ 15.9％; P = 0.052）。电子宫X线照相法的灵敏度优于超声测功法（86.0 vs. 73.6 ％; P <0.001）。结论：电子宫X线照相术在检测产妇子宫收缩方面更可靠，其准确性与超声测功法相似。
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