Jane Warland1, Jillian Dorrian2, Allan J Kember3,4, Craig Phillips5, Ali Borazjani4, Janna L Morrison6, Louise M O'Brien7. 1. Mother's Babies and Families Research Group, School of Nursing and Midwifery, University of South Australia, Adelaide, South Australia, Australia. 2. Behaviour-Brain-Body Research Centre, Sleep and Chronobiology Laboratory, School of Psychology, Social Work and Social Policy, University of South Australia, Adelaide, South Australia, Australia. 3. Dalhousie Medical School, Dalhousie University, Halifax, Nova Scotia, Canada. 4. Global Innovations for Reproductive Health and Life (GIRHL) Cleveland, Ohio. 5. School of Nursing and Midwifery, University of South Australia, Adelaide, South Australia, Australia; 4Global Innovations for Reproductive Health and Life (GIRHL) Cleveland, Ohio. 6. Early Origins of Adult Health Research Group, School of Pharmacy and Medical Sciences, Sansom Institute for Health Research, University of South Australia, Adelaide, South Australia, Australia. 7. Sleep Disorders Center and Department of Obstetrics and Gynecology, University of Michigan, Ann Arbor, Michigan.
Abstract
STUDY OBJECTIVES: To test whether a customized positional therapy device, PrenaBelt, would reduce time spent sleeping supine and evaluate any change in maternal or fetal parameters, in a group of healthy pregnant women in the third trimester of pregnancy. METHODS:Participants underwent an in-home, overnight sleep study during late pregnancy (32-38 weeks). Participants were observed over 2 nights: 1 night when the PrenaBelt was not worn (nonintervention or control) and 1 night when it was (intervention). The intervention night was randomly allocated, and the study nights were consecutive. On the control night, participants were filmed using a night-capable (infrared) video camera, maternal sleep was measured by the Watch-PAT200, and the fetus was continuously monitored using the Monica AN24. On the intervention night, video, maternal, and fetal monitoring were repeated with the addition of the mother wearing the PrenaBelt. RESULTS: A total of 25 healthy pregnant women were studied. Four had missing data for the Watch-PAT or Monica, and eight had missing or disrupted video data. Video-determined time in bed was not significantly different during intervention and control nights (P = .196, r = -.23). Median time spent supine during the intervention night was reduced from 48.3 minutes, to 28.5 minutes during the control night (P = .064, r = -.33). The difference in the proportion of time spent supine was significant (P = .039). There was no significant difference in objectively estimated sleep time (P = .651, r = -.07). Improvement was observed in both maternal and fetal parameters during the intervention night with an increase in median minimum maternal oxygen saturations (control = 91.6%, intervention = 92.4%, P = .006, r = -.42), fewer maternal oxygen desaturations (control = 7.1, intervention = 5.9, P = .095, r = -.26), and fewer fetal heart rate decelerations (control = 14.0, intervention = 10.4, P = .045, r = -.31) compared to the control night. CONCLUSIONS: Results provide preliminary evidence that an intervention to reduce supine sleep in late pregnancy may provide maternal and fetal health benefits, with minimal effect on maternal perception of sleep quality and objectively estimated sleep time. Further research to explore relationships between objectively determined maternal sleep position, maternal respiratory indices, and fetal well-being is warranted.
RCT Entities:
STUDY OBJECTIVES: To test whether a customized positional therapy device, PrenaBelt, would reduce time spent sleeping supine and evaluate any change in maternal or fetal parameters, in a group of healthy pregnant women in the third trimester of pregnancy. METHODS:Participants underwent an in-home, overnight sleep study during late pregnancy (32-38 weeks). Participants were observed over 2 nights: 1 night when the PrenaBelt was not worn (nonintervention or control) and 1 night when it was (intervention). The intervention night was randomly allocated, and the study nights were consecutive. On the control night, participants were filmed using a night-capable (infrared) video camera, maternal sleep was measured by the Watch-PAT200, and the fetus was continuously monitored using the Monica AN24. On the intervention night, video, maternal, and fetal monitoring were repeated with the addition of the mother wearing the PrenaBelt. RESULTS: A total of 25 healthy pregnant women were studied. Four had missing data for the Watch-PAT or Monica, and eight had missing or disrupted video data. Video-determined time in bed was not significantly different during intervention and control nights (P = .196, r = -.23). Median time spent supine during the intervention night was reduced from 48.3 minutes, to 28.5 minutes during the control night (P = .064, r = -.33). The difference in the proportion of time spent supine was significant (P = .039). There was no significant difference in objectively estimated sleep time (P = .651, r = -.07). Improvement was observed in both maternal and fetal parameters during the intervention night with an increase in median minimum maternal oxygen saturations (control = 91.6%, intervention = 92.4%, P = .006, r = -.42), fewer maternal oxygen desaturations (control = 7.1, intervention = 5.9, P = .095, r = -.26), and fewer fetal heart rate decelerations (control = 14.0, intervention = 10.4, P = .045, r = -.31) compared to the control night. CONCLUSIONS: Results provide preliminary evidence that an intervention to reduce supine sleep in late pregnancy may provide maternal and fetal health benefits, with minimal effect on maternal perception of sleep quality and objectively estimated sleep time. Further research to explore relationships between objectively determined maternal sleep position, maternal respiratory indices, and fetal well-being is warranted.
Authors: Irene Permut; Montserrat Diaz-Abad; Wissam Chatila; Joseph Crocetti; John P Gaughan; Gilbert E D'Alonzo; Samuel L Krachman Journal: J Clin Sleep Med Date: 2010-06-15 Impact factor: 4.062
Authors: Louise M O'Brien; Alexandra S Bullough; Anita V Shelgikar; Mark C Chames; Roseanne Armitage; Ronald D Chervin Journal: J Clin Sleep Med Date: 2012-06-15 Impact factor: 4.062
Authors: Diane M Blyton; Michael R Skilton; Natalie Edwards; Annemarie Hennessy; David S Celermajer; Colin E Sullivan Journal: Sleep Date: 2013-01-01 Impact factor: 5.849
Authors: Maristella Lucchini; Ronald J Wapner; Nhan-Chang Chia-Ling; Caroline Torres; Joel Yang; Ismee A Williams; William P Fifer Journal: Int J Gynaecol Obstet Date: 2020-01-30 Impact factor: 3.561
Authors: Danielle L Wilson; Alison M Fung; Gabrielle Pell; Hannah Skrzypek; Maree Barnes; Ghada Bourjeily; Susan P Walker; Mark E Howard Journal: Sleep Date: 2022-04-11 Impact factor: 5.849
Authors: Jerry Coleman; Maxfield Okere; Joseph Seffah; Allan Kember; Louise M O'Brien; Ali Borazjani; Michael Butler; Jesse Wells; Sarah MacRitchie; Andre Isaac; Kaishin Chu; Heather Scott Journal: BMJ Open Date: 2019-05-01 Impact factor: 2.692