Journal
AMERICAN JOURNAL OF OBSTETRICS AND GYNECOLOGY
Volume 206, Issue 5, Pages -Publisher
MOSBY-ELSEVIER
DOI: 10.1016/j.ajog.2011.12.015
Keywords
contractions; intrauterine pressure catheter; myometrial electrical activity
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OBJECTIVE: Intrauterine pressure catheter (IUPC) is the primary device used to evaluate uterine activity. In contrast to the IUPC, electrical uterine myography (EUM) enables noninvasive measurement of frequency, intensity, and tone of contractions. The aim of this study was to determine the accuracy of EUM compared to IUPC. STUDY DESIGN: EUM measured myometrial electrical activity using a multichannel amplifier and a noninvasive position sensor. In all, 47 women in labor were monitored simultaneously with an IUPC and EUM. We compared the frequency, intensity, and tone of uterine contractions between the methods. RESULTS: The correlation of the frequency, intensity, and tone of contractions between uterine electromyography and IUPC was strong with significant r values of 0.808-1 (P < .0001). CONCLUSION: Electrical uterine electromyography yields information about uterine contractility comparable to that obtained with IUPC.
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