The effect of uterine contractions on intrapartum fetal heart rate analyzed by a computerized system

American Journal of Obstetrics and Gynecology
E Z ZimmerZ Weiner

Abstract

Our goal was to assess the effect of uterine activity on fetal heart rate indexes during the active phase of labor with a computerized fetal heart rate monitoring system. Twenty-six healthy women were studied in active labor without analgesia. Fetal heart rate was analyzed by a computerized system (Sonicaid, System 8000), providing a numeric analysis of the fetal heart rate indexes. Montevideo and Alexandria units were used for quantitative assessment of contractions. A significant correlation was found between Montevideo units and short-term variation (r = -0.62, p < 0.001), episodes of high (r = -0.48, p < 0.01) and low (r = 0.58, p < 0.01) fetal heart rate variation, and frequency of large accelerations (r = -0.49, p < 0.01). A significant correlation was also found between Alexandria units and short-term variation (r = -0.645, p < 0.001), episodes of high fetal heart rate variation (r = -0.58, p < 0.01), and frequency of large accelerations (r = -0.49, p < 0.01). In active labor fetal heart rate variability is significantly affected by the intensity and duration of contractions.

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Citations

Jan 12, 2008·Journal de gynécologie, obstétrique et biologie de la reproduction·E Verspyck, L Sentilhes
Jan 11, 2008·Journal of Perinatal Medicine·Petra C A M Bakker, Herman P van Geijn
Aug 29, 2006·Medical & Biological Engineering & Computing·M RomanoM Bracale
Apr 27, 2010·Pakistan Journal of Biological Sciences : PJBS·F SahhafM Ghojazadeh
Sep 30, 2000·Journal of Obstetric, Gynecologic, and Neonatal Nursing : JOGNN·P R McCartney
Oct 3, 2006·Current Opinion in Anaesthesiology·T G Cheek, S Lewin
Feb 8, 2014·The Cochrane Database of Systematic Reviews·Edgardo AbalosD Wilhelm Steyn
Sep 14, 2020·BMC Pregnancy and Childbirth·Adam J ReynoldsBreda C Hayes

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