title: A comparison of surface acquired uterine electromyography and intrauterine pressure catheter to assess uterine activity.
abstract: 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.
  
  
  METHODS
  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).
  
  
  CONCLUSIONS
  Electrical uterine electromyography yields information about uterine contractility comparable to that obtained with IUPC.
authors.affiliation: Department of Obstetrics and Gynecology, Maternal Fetal Unit, Meir Medical Center, Kfar Saba, affiliated with Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel.
authors.forename: Gabi
authors.initials: G
authors.lastname: Haran
authors.forename: Michal
authors.initials: M
authors.lastname: Elbaz
authors.forename: Moshe D
authors.initials: MD
authors.lastname: Fejgin
authors.forename: Tal
authors.initials: T
authors.lastname: Biron-Shental
mesh_terms: D002404:Catheterization; D004576:Electromyography; D005260:Female; D006801:Humans; D011247:Pregnancy; D011312:Pressure; D011446:Prospective Studies; D014590:Uterine Contraction / Q000502:physiology*; D018590:Uterine Monitoring / Q000379:methods*