title: Electronic fetal heart rate monitoring in five fetuses with Ebstein's anomaly.
abstract: OBJECTIVE
  It is not clear whether fetuses with Ebstein's anomaly are likely to show abnormalities on electronic fetal heart rate (FHR) monitoring during labor.
  
  
  METHODS
  We performed retrospective analysis of FHR monitoring results obtained between 2.5 and 0.5 h prior to delivery in all of five fetuses prenatally diagnosed as having Ebstein's anomaly and born at our institution during the period between March 2005 and July 2011. All five mothers attempted to give birth vaginally. The results of FHR monitoring in 100 consecutive women with otherwise healthy singletons who attempted vaginal delivery were included as controls.
  
  
  RESULTS
  The absence of FHR acceleration (4/5 [80%]), decreased baseline FHR variability (3/5 [60%]) and late deceleration (4/5 [80%]) were seen significantly more often in the five fetuses with Ebstein's anomaly than the 100 fetuses born to control women (6.0%, 6.0%, and 10%, respectively).
  
  
  CONCLUSIONS
  Fetuses with Ebstein's anomaly during labor were likely to exhibit absent acceleration, decreased baseline FHR variability and late deceleration compared to infants without cardiac structural anomalies.
authors.affiliation: Department of Obstetrics, Hokkaido University Graduate School of Medicine, Sapporo, Japan.
authors.forename: Mamoru
authors.initials: M
authors.lastname: Morikawa
authors.forename: Daisuke
authors.initials: D
authors.lastname: Endo
authors.forename: Takahiro
authors.initials: T
authors.lastname: Yamada
authors.forename: Kazutoshi
authors.initials: K
authors.lastname: Cho
authors.forename: Takashi
authors.initials: T
authors.lastname: Yamada
authors.forename: Hisanori
authors.initials: H
authors.lastname: Minakami
mesh_terms: D036861:Delivery, Obstetric; D004437:Ebstein Anomaly / Q000503:physiopathology*; D005260:Female; D005323:Fetal Monitoring; D006340:Heart Rate, Fetal; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D011247:Pregnancy; D012189:Retrospective Studies
keywords: Ebstein's anomaly; cardiotocography; prenatal diagnosis