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Related Concept Videos

Insufficient Sleep and Sleep Deprivation01:13

Insufficient Sleep and Sleep Deprivation

Insufficient sleep refers to not getting the recommended amount of sleep for optimal functioning, even if it's just slightly less than needed. Sleep insufficiency may occur due to lifestyle choices, such as staying up late for social events or work, resulting in routinely getting less sleep than required. For example, consistently sleeping 6 hours when the body needs 7-9 hours can lead to cumulative effects on health and well-being.
Sleep deprivation is a more severe form of sleep loss...
Development of the Oral Microbiota01:28

Development of the Oral Microbiota

The establishment of the oral microbiome begins before birth, challenging the long-held belief that the fetal oral cavity is sterile. The presence of oral microbes such as Streptococcus and Fusobacterium in amniotic fluid suggests that microbial exposure may occur in utero, potentially through translocation from the maternal oral or gastrointestinal tract. This early colonization primes the neonatal immune system and sets the stage for subsequent microbial succession. Maternal health,...
Cause and Effect01:53

Cause and Effect

While variables are sometimes correlated because one does cause the other, it could also be that some other factor, a confounding variable, is actually causing the systematic movement in our variables of interest. For instance, as sales in ice cream increase, so does the overall rate of crime. Is it possible that indulging in your favorite flavor of ice cream could send you on a crime spree? Or, after committing crime do you think you might decide to treat yourself to a cone?
Teratogenicity01:07

Teratogenicity

The ability of a drug to produce structural deformations and functional abnormalities in the developing embryo or the fetus is called teratogenicity, and the drug producing this effect is known as a teratogen. Teratogenic effects include stillbirth, miscarriage, intrauterine growth restriction, and neurocognitive delay. A teratogen may affect the embryo at different stages of development, which is important in determining the type and extent of the damage. During blastocyst formation, the early...
Nightmares and Night Terrors01:18

Nightmares and Night Terrors

Nightmares and night terrors represent two distinct types of sleep disturbances that differ in timing, characteristics, and the sleeper's recall of the event. Nightmares are vivid, disturbing dreams that usually awaken the sleeper from REM sleep, a stage of sleep where brain activity is high, and dreams are most frequent. Upon awakening, individuals often have detailed recollections of their nightmares, which can include themes of threats to survival, security, or self-esteem.
Nightmares often...
Regression Toward the Mean01:52

Regression Toward the Mean

Regression toward the mean (“RTM”) is a phenomenon in which extremely high or low values—for example, and individual’s blood pressure at a particular moment—appear closer to a group’s average upon remeasuring. Although this statistical peculiarity is the result of random error and chance, it has been problematic across various medical, scientific, financial and psychological applications. In particular, RTM, if not taken into account, can interfere when researchers try to extrapolate results...

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Related Experiment Video

Updated: Jun 19, 2026

A Rat Model of Mild Intrauterine Hypoperfusion with Microcoil Stenosis
06:19

A Rat Model of Mild Intrauterine Hypoperfusion with Microcoil Stenosis

Published on: January 7, 2018

Disturbed sleep and preterm birth: a potential relationship?

L B Strange1, K P Parker, M L Moore

  • 1RTI International, Atlanta, GA, USA. lstrange@rti.org

Clinical and Experimental Obstetrics & Gynecology
|October 29, 2009
PubMed
Summary
This summary is machine-generated.

Pregnant women experiencing disturbed sleep, particularly longer sleep latency, may face an increased risk of preterm birth. Further research is needed to understand the underlying physiological factors.

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Last Updated: Jun 19, 2026

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Published on: January 7, 2018

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Modeling Ascending Vaginal Infection, Preterm Birth, and Neonatal Morbidity in Mice
04:18

Modeling Ascending Vaginal Infection, Preterm Birth, and Neonatal Morbidity in Mice

Published on: October 10, 2025

Area of Science:

  • Obstetrics and Gynecology
  • Sleep Medicine
  • Perinatal Health

Background:

  • Many pregnant women report sleep disturbances.
  • The clinical impact of pregnancy-related sleep issues on birth outcomes is not well understood.
  • Preterm birth remains a significant concern in perinatal health.

Purpose of the Study:

  • To investigate the association between subjective sleep quality and daytime sleepiness during pregnancy and the incidence of preterm birth.
  • To examine how sleep parameters relate to clinical outcomes in a cohort of pregnant women.

Main Methods:

  • A cohort of 220 pregnant women was recruited.
  • Participants completed validated questionnaires: Pittsburgh Sleep Quality Index (PSQI), Epworth Sleepiness Scale (ESS), and Perceived Stress Scale (PSS) during the second trimester.
  • Women were categorized based on birth outcome (preterm vs. full-term) and compared on sleep and stress measures.

Main Results:

  • The overall preterm birth rate was 14.6%.
  • Women who experienced preterm birth reported significantly longer sleep latency (time to fall asleep).
  • The preterm group showed a trend towards increased sleep medication use but reported less daytime dysfunction on the PSQI.

Conclusions:

  • Disturbed sleep patterns during pregnancy, characterized by increased sleep latency, may be linked to an elevated risk of preterm birth.
  • Perceived stress levels did not significantly differ between women with preterm and full-term births.
  • Further investigation into the physiological mechanisms connecting sleep disturbances and preterm birth vulnerability is warranted.