Evidence map›Paper›PMID 30092890›Full record

ArticleJournal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine2018

Modifying Maternal Sleep Position in Late Pregnancy Through Positional Therapy: A Feasibility Study.

Jane Warland, Jillian Dorrian, Allan J Kember, Craig Phillips, Ali Borazjani, Janna L Morrison, Louise M O'Brien

Registry-linked trialOpen access · bronzeAbstract read
In one paragraph

Article in Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04437407 (UniSA BackOff! Study), which is not on this map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
0.7field-weighted citation impact, top 33% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT04437407 naterminatednot on this mapstarted 2020, after this paper: background citation

UniSA BackOff! Study: A Randomized, Controlled, Five-way, Cross-over Trial to Evaluate the Effect of a Positional Therapy Device on Maternal Sleeping Position in the Third Trimester of Pregnancy

TypeinterventionalSponsorShiphrah Biomedical Inc.Ran2020 to 2021Enrolled6ConditionsStillbirth, Infant, Low Birth Weight, Infant, Very Low Birth Weight, Sleep-Disordered BreathingArmsPB2-1 prototype, PB2-2 prototype, PB2-3 prototype, PB2-4 prototype, PB2-5 prototype
3 · Its place in the literature

Who cites it

14 citing papers in PubMed, 26 citations in OpenAlex.

  1. Trial
  2. Trial
  3. Trial
  4. CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 2025
    Article
  5. A new frontier for positional therapy: obstetrics.Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2025
    Article
  6. Sleeping posture in pregnancy.CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 2025
    Article
  7. Article
  8. Review
  9. Article
  10. Article
  11. Sleep position and breathing in late pregnancy and perinatal outcomes.Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2020
    Article
  12. Article
  13. Effects of maternal sleep position on fetal and maternal heart rate patterns using overnight home fetal ECG recordings.International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics · 2020
    Observational
  14. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 3 institutions in 3 countries.

Jane WarlandMother's Babies and Families Research Group, School of Nursing and Midwifery, University of South Australia, Adelaide, South Australia, Australia.
Jillian DorrianBehaviour-Brain-Body Research Centre, Sleep and Chronobiology Laboratory, School of Psychology, Social Work and Social Policy, University of South Australia, Adelaide, South Australia, Australia.
Allan J KemberDalhousie Medical School, Dalhousie University, Halifax, Nova Scotia, Canada.
Craig PhillipsSchool of Nursing and Midwifery, University of South Australia, Adelaide, South Australia, Australia; 4Global Innovations for Reproductive Health and Life (GIRHL) Cleveland, Ohio.
Ali BorazjaniGlobal Innovations for Reproductive Health and Life (GIRHL) Cleveland, Ohio.
Janna L MorrisonEarly 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.
Louise M O'BrienSleep Disorders Center and Department of Obstetrics and Gynecology, University of Michigan, Ann Arbor, Michigan.
University of South Australia · AUDalhousie University · CAUniversity of Michigan · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

STUDY

objectivesTo 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.

methodsParticipants 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.

resultsA 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 (

conclusionsResults 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.

Indexed as

MothersPregnancy Trimester, ThirdAdolescentAdultFeasibility StudiesFemaleHeart Rate, FetalHumansOxygenPatient PositioningPosturePregnancySleepTime FactorsVideotape RecordingYoung AdultOxygenpositional therapypregnancysleep positionstillbirth

Identifiers

PMID30092890
PMCPMC6086963
OpenAlexW2887232008

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.