title: Fetal heart rate monitoring during nocturnal polysomnography.
abstract: OBJECTIVE
  To evaluate the success rate of adding continuous electronic fetal heart rate monitoring (EFM) during full night polysomnography (PSG), in women with both gestational hypertension (GH) with uncomplicated singleton pregnancies.
  
  
  METHODS
  As part of a larger study evaluating for the presence of sleep disordered breathing (SDB) in women with GH compared to women with uncomplicated pregnancies, continuous EFM was added to usual polysomnography.
  
  
  RESULTS
  Forty-eight EFM studies (26 with GH and 22 with uncomplicated pregnancies) were evaluated. EFM studies were categorized by the percentage of time that interpretable tracings were obtained: < 25% of the time; 25-50% of the time; or > 50% of the time. We deemed > 50% of the time to be ideal, but under the test conditions 25-50% of the time to be acceptable. For women with GH, 71% of women had ideal or acceptable overnight EFM tracings compared to 82% for women with uncomplicated pregnancies. Of those women who were diagnosed with SDB, 77% had an acceptable or ideal EFM tracing.
  
  
  CONCLUSIONS
  Adding EFM to conventional polysomnography is feasible and safe. It may prove an important adjunct as interest in sleep disorders of pregnancy continues to expand.
authors.affiliation: Division of Respiratory Medicine, Hospital Drive, Saskatoon, SK, Canada. j.reid@usask.ca
authors.forename: J
authors.initials: J
authors.lastname: Reid
authors.forename: R
authors.initials: R
authors.lastname: Skomro
authors.forename: J
authors.initials: J
authors.lastname: Gjevre
authors.forename: D
authors.initials: D
authors.lastname: Cotton
authors.forename: H
authors.initials: H
authors.lastname: Ward
authors.forename: O
authors.initials: O
authors.lastname: Olatunbosun
mesh_terms: D016022:Case-Control Studies; D005260:Female; D005323:Fetal Monitoring / Q000379:methods*; D006340:Heart Rate, Fetal / Q000502:physiology*; D006801:Humans; D046110:Hypertension, Pregnancy-Induced / Q000503:physiopathology*; D009765:Obesity / Q000150:complications; D017286:Polysomnography / Q000379:methods*; D011247:Pregnancy; D011248:Pregnancy Complications / Q000175:diagnosis*; D012891:Sleep Apnea Syndromes / Q000175:diagnosis*