Evidence map›Paper›PMID 24888772›Full record

ArticleBJOG : an international journal of obstetrics and gynaecology2014

Hypertension, snoring, and obstructive sleep apnoea during pregnancy: a cohort study.

L M O'Brien, A S Bullough, M C Chames, A V Shelgikar, R Armitage, C Guilleminualt, C E Sullivan, T R B Johnson, R D Chervin

Registry-linked trialOpen access · greenAbstract read
In one paragraph

Article in BJOG : an international journal of obstetrics and gynaecology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT01029691 (Use of PAP in Women With Pre-eclampsia), which is not on this map. Cited by 38 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed, 1 pooled it
3.3field-weighted citation impact, top 7% 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.

NCT01029691 nacompletednot on this map

Use of PAP in Women With Pre-eclampsia

TypeinterventionalSponsorUniversity of MichiganRan2009 to 2015Enrolled125ConditionsPreeclampsia, HypertensionArmsPositive Airway Pressure
3 · Its place in the literature

Who cites it

38 citing papers in PubMed, 1 synthesis or guideline pooled it, 83 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Review
  10. Article
  11. Article
  12. Obstructive sleep apnea in pregnant women.International anesthesiology clinics · 2022
    Article
  13. Article
  14. Sleep-Disordered Breathing in Pregnancy.Advances in experimental medicine and biology · 2022
    Article
  15. Fetal Heart Rate Decelerations in Women with Sleep-Disordered Breathing.Reproductive sciences (Thousand Oaks, Calif.) · 2021
    Article
  16. Article
  17. Review
  18. Article
  19. Review
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors at 4 institutions in 2 countries.

L M O'BrienSleep Disorders Center and Department of Neurology, University of Michigan, Ann Arbor, MI, USA; Department of Obstetrics & Gynecology, University of Michigan, Ann Arbor, MI, USA.
A S Bullough
M C Chames
A V Shelgikar
R Armitage
C Guilleminualt
C E Sullivan
T R B Johnson
R D Chervin
University of Michigan–Ann Arbor · USMichigan Medicine · USStanford University · USUniversity of Sydney · AU

Funding

Use of PAP in women with pre-eclampsiaK23HL095739 · NHLBI · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI O'BRIEN, LOUISE M. · 2009 to 2013
$604k
The Impact of Sleep-Disordered Breathing on Adverse Pregnancy OutcomesR21HL089918 · NHLBI · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI O'BRIEN, LOUISE M. · 2009 to 2010
$425k
Sleep and Neurobehavioral Performance After Cleft Palate RepairR21HL087819 · NHLBI · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI O'BRIEN, LOUISE M. · 2009 to 2010
$417k
NHLBI NIH HHS K23 HL095739NHLBI NIH HHS R21 HL087819NHLBI NIH HHS R21 HL089918
6 · The paper itself

Abstract

objectiveTo assess the frequency of obstructive sleep apnoea among women with and without hypertensive disorders of pregnancy.

designCohort study.

settingObstetric clinics at an academic medical centre. POPULATION: Pregnant women with hypertensive disorders (chronic hypertension, gestational hypertension, or pre-eclampsia) and women who were normotensive.

methodsWomen completed a questionnaire about habitual snoring and underwent overnight ambulatory polysomnography.

main outcome measuresThe presence and severity of obstructive sleep apnoea.

resultsObstructive sleep apnoea was found among 21 of 51 women with hypertensive disorders (41%), but in only three of 16 women who were normotensive (19%, chi-square test, P=0.005). [Author correction added on 16 June 2014, after first online publication: Results mentioned in the abstract were amended.] Non-snoring women with hypertensive disorders typically had mild obstructive sleep apnoea, but >25% of snoring women with hypertensive disorders had moderate to severe obstructive sleep apnoea. Among women with hypertensive disorders, the mean apnoea/hypopnoea index was substantially higher in snorers than in non-snorers (19.9±34.1 versus 3.4±3.1, P=0.013), and the oxyhaemoglobin saturation nadir was significantly lower (86.4±6.6 versus 90.2±3.5, P=0.021). Among women with hypertensive disorders, after stratification by obesity, the pooled relative risk for obstructive sleep apnoea in snoring women with hypertension compared with non-snoring women with hypertension was 2.0 (95% CI 1.4-2.8).

conclusionsPregnant women with hypertension are at high risk for unrecognised obstructive sleep apnoea. Although longitudinal and intervention studies are urgently needed, given the known relationship between obstructive sleep apnoea and hypertension in the general population, it would seem pertinent that hypertensive pregnant women who snore should be tested for obstructive sleep apnoea, a condition believed to cause or promote hypertension.

Indexed as

AdultCohort StudiesFemaleHumansHypertensionHypertension, Pregnancy-InducedPolysomnographyPregnancyPregnancy ComplicationsSeverity of Illness IndexSleep Apnea, ObstructiveSnoringSurveys and QuestionnairesYoung AdultHypertensionobstructive sleep apnoeapregnancysnoring

Identifiers

PMID24888772
PMCPMC4241143
OpenAlexW2158091690

What OpenQuestion holds

Textmetadata
LicenceTDM
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.