Key clinical point: Sleep position does not affect pregnancy outcomes, contrary to findings of previous retrospective studies.
Major finding: There was no association between non–left-sided lateral sleeping in early pregnancy (adjusted odds ratio, 1.00) or later pregnancy (aOR, 0.99).
Study details: Prospective cohort study (n = 8,706).
Disclosures: The study received funding from the Eunice Kennedy Shriver National Institute of Child Health and Human Development and grants from multiple universities. One author received research funding from Kyndermed through her institution. Another receives royalties from UpToDate.com. Dr. Fox and Dr. Oster have no relevant financial disclosures.
Silver RM et al. Obstet Gynecol. 2019. doi: 10.1097/AOG.0000000000003458; Fox N and Oster E. Obstet. Gynecol. 2019 Oct. doi: 10.1097/AOG.0000000000003466.