Robert M Silver1, Shannon Hunter, Uma M Reddy, Francesca Facco, Karen J Gibbins, William A Grobman, Brian M Mercer, David M Haas, Hyagriv N Simhan, Samuel Parry, Ronald J Wapner, Judette Louis, Judith M Chung, Grace Pien, Frank P Schubert, George R Saade, Phyllis Zee, Susan Redline, Corette B Parker. 1. University of Utah, Salt Lake City, Utah; RTI International, Research Triangle Park, North Carolina; Yale University, New Haven, Connecticut; University of Pittsburgh, Pittsburgh, Pennsylvania; Oregon Health & Science University, Portland, Oregon; Northwestern University, Evanston, Illinois; Case Western Reserve University, Cleveland, Ohio; Indiana University, Bloomington, Indiana; University of Pennsylvania, Philadelphia, Pennsylvania; Columbia University, New York, New York; University of South Florida, Tampa, Florida; University of California-Irvine, Irvine, California; Johns Hopkins Medicine, Baltimore, Maryland; University of Texas Medical Branch at Galveston, Galveston, Texas; and Brigham and Women's Hospital, Boston, Massachusetts.
Abstract
OBJECTIVE: To examine the relationship between prospectively assessed maternal sleep position and subsequent adverse pregnancy outcomes. METHODS: This was a secondary analysis of a prospective observational multicenter cohort study of nulliparous women with singleton gestations who were enrolled between October 2010 and May 2014. Participants had three study visits that were not part of clinical care. They prospectively completed in-depth sleep questionnaires between 6 0/7 and 13 6/7 weeks of gestation and 22 0/7 and 29 6/7 weeks of gestation, the first and third study visits. A subset of women also underwent level 3 home sleep tests using the Embletta Gold device. The primary outcome was a composite of adverse pregnancy outcomes such as stillbirth, a small-for-gestational-age newborn, and gestational hypertensive disorders. RESULTS: A total of 8,706 (of 10,038) women had data from at least one sleep questionnaire and for pregnancy outcomes, and they comprised the population for this analysis. The primary outcome occurred in 1,903 pregnancies (22%). There was no association between reported non-left lateral or supine sleep during the last week of the first visit (adjusted odds ratio [aOR] 1.00 [95% CI 0.89-1.14]) or third visit (aOR 0.99 [95% CI 0.89-1.11] and the composite or any individual outcome, except for an apparent protective effect for stillbirth at the third visit (aOR 0.27 (95% CI 0.09-0.75). Women with objectively measured supine sleep position for at least 50% of the time were no more likely than those in the supine position 50% or less of the time to have the composite adverse outcome. CONCLUSIONS: Going to sleep in the supine or right lateral position, as self-reported before the development of pregnancy outcome and objectively assessed through 30 weeks of gestation, was not associated with an increased risk of stillbirth, a small-for-gestational-age newborn, or gestational hypertensive disorders.
OBJECTIVE: To examine the relationship between prospectively assessed maternal sleep position and subsequent adverse pregnancy outcomes. METHODS: This was a secondary analysis of a prospective observational multicenter cohort study of nulliparous women with singleton gestations who were enrolled between October 2010 and May 2014. Participants had three study visits that were not part of clinical care. They prospectively completed in-depth sleep questionnaires between 6 0/7 and 13 6/7 weeks of gestation and 22 0/7 and 29 6/7 weeks of gestation, the first and third study visits. A subset of women also underwent level 3 home sleep tests using the Embletta Gold device. The primary outcome was a composite of adverse pregnancy outcomes such as stillbirth, a small-for-gestational-age newborn, and gestational hypertensive disorders. RESULTS: A total of 8,706 (of 10,038) women had data from at least one sleep questionnaire and for pregnancy outcomes, and they comprised the population for this analysis. The primary outcome occurred in 1,903 pregnancies (22%). There was no association between reported non-left lateral or supine sleep during the last week of the first visit (adjusted odds ratio [aOR] 1.00 [95% CI 0.89-1.14]) or third visit (aOR 0.99 [95% CI 0.89-1.11] and the composite or any individual outcome, except for an apparent protective effect for stillbirth at the third visit (aOR 0.27 (95% CI 0.09-0.75). Women with objectively measured supine sleep position for at least 50% of the time were no more likely than those in the supine position 50% or less of the time to have the composite adverse outcome. CONCLUSIONS: Going to sleep in the supine or right lateral position, as self-reported before the development of pregnancy outcome and objectively assessed through 30 weeks of gestation, was not associated with an increased risk of stillbirth, a small-for-gestational-age newborn, or gestational hypertensive disorders.
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