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Title: Longitudinally-assessed maternal sleep position, measures of breathing during sleep, and fetal growth in high-risk pregnancies.
Austin Authors: Katz, Juliana;Sanapo, Laura;Bublitz, Margaret H;Guillen, Melissa;Avalos, Ashanti;Aldana, Annaly;Wilson, Danielle L ;Bourjeily, Ghada
Affiliation: Warren Alpert Medical School of Brown University, Providence, RI, US.
The Miriam Hospital, Women's Medicine Collaborative, Providence, RI, US.
Institute for Breathing and Sleep
Warren Alpert Medical School of Brown University, Providence, RI, US.;The Miriam Hospital, Women's Medicine Collaborative, Providence, RI, US.
Issue Date: 8-Feb-2024
Date: 2023
Publication information: Sleep 2024-02-08; 47(2)
Abstract: Subjective recall of supine sleep during pregnancy has been linked to increased risk of stillbirth, but longitudinal, objective data are lacking. We aimed to examine how sleep position and breathing parameters change throughout pregnancy, and investigated associations between maternal supine sleep, assessed objectively in early and late gestation, and fetal growth velocity in high-risk women. Women with singleton pregnancies and body mass index (BMI) ≥27 kg/m2 underwent level-III sleep apnea testing. Sleep position was assessed by accelerometry. We derived percentiles of estimated fetal weight and birthweight using FetalGPSR software, then calculated growth velocity as change in percentile/week between the second trimester anatomy scan and birth. In total, 446 women were included, with N=126 in the longitudinal sleep pattern analysis and N=83 in the fetal growth analysis. Sleep onset position and predominant sleep position were significantly correlated in both early (p=0.001) and late (p<0.01) pregnancy. However, supine going-to-bed position predicted predominant supine sleep in only 47% of women. Between early and late pregnancy there was a reduction in predominant supine sleepers (51.6% to 30.2%). Percent of sleep spent supine and oxygen desaturation index, in the third trimester, were significantly associated after BMI adjustment (B=0.018, p=0.04). Models did not suggest significant effects of early or late pregnancy supine sleep on growth velocity (p>0.05). Going-to-bed position predicts predominant supine sleep in less than half of women with overweight and obesity. Time spent supine throughout pregnancy correlates with measures of sleep-disordered breathing. Maternal sleep position patterns did not affect fetal growth velocity in this high-risk population.
DOI: 10.1093/sleep/zsad315
ORCID: 0000-0001-6754-7359
Journal: Sleep
PubMed URL: 38108687
ISSN: 1550-9109
Type: Journal Article
Subjects: fetal growth
sleep disordered breathing
sleep position
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