title: Typical sleep positions in pregnant women.
abstract: OBJECTIVE
  Maternal supine posture in late pregnancy and labor is known to compromise maternal hemodynamics and subsequently affect the fetus. Recently, maternal supine sleep position during late pregnancy has been postulated to play a role in stillbirth. However, no objective data exist regarding how often pregnant women sleep supine. This study was therefore conducted to determine the proportion of pregnant women who spend time asleep in the supine position.
  
  
  METHODS
  A secondary analysis of data from pregnant women who underwent home sleep studies.
  
  
  RESULTS
  Of 51 pregnant women, mean gestational age 28.3±6.9weeks, the vast majority of women (82.4%) spent some time sleeping in the supine position. The median proportion of overall time spent in the supine sleep position was 26.5% (90%CI 0.0-82.9%).
  
  
  CONCLUSIONS
  Our data suggest that if supine position plays a role in stillbirth, most women may benefit from education regarding sleep position.
  
  
  CONCLUSIONS
  Most pregnant women spend time asleep on their back. Given the known data on supine posture and maternal cardiovascular compromise together with emerging data on supine sleep position and stillbirth, it may be pertinent for healthcare providers to provide pregnant women with information about sleep position particularly during late pregnancy.
authors.affiliation: Sleep Disorders Center, Department of Neurology, University of Michigan, Ann Arbor, MI, United States; Department of Obstetrics & Gynecology, University of Michigan, Ann Arbor, MI, United States; Department of Oral & Maxillofacial Surgery, University of Michigan, Ann Arbor, MI, United States. Electronic address: louiseo@med.umich.edu.
authors.forename: Louise M
authors.initials: LM
authors.lastname: O'Brien
authors.affiliation: School of Nursing and Midwifery, University of South Australia, Adelaide, Australia.
authors.forename: Jane
authors.initials: J
authors.lastname: Warland
mesh_terms: D000328:Adult; D005260:Female; D006439:Hemodynamics; D006801:Humans; D011247:Pregnancy; D011248:Pregnancy Complications; D012890:Sleep; D050497:Stillbirth; D016683:Supine Position
keywords: Polysomnography; Pregnancy; Sleep position; Supine