Sleep fragmentation and evidence for sleep debt in alcohol-exposed infants
Marcia Troese1, Michio Fukumizu, Bethany J Sallinen
1Department of Psychology, University of Maine, Orono, ME, USA.
Insights
Prenatal alcohol exposure disrupts infant sleep patterns, leading to increased fragmentation and reduced spontaneous movements. This sleep disruption may increase the risk for Sudden Infant Death Syndrome (SIDS).
Area of Science:
- Neurodevelopmental science
- Sleep medicine
- Perinatal health
Background:
- Prenatal alcohol exposure is linked to adverse neurodevelopmental outcomes in infants.
- Sudden Infant Death Syndrome (SIDS) risk is elevated in infants exposed to alcohol before birth.
Purpose of the Study:
- To investigate the connection between prenatal alcohol exposure and infant sleep and arousal.
- To examine sleep-related spontaneous motor movements in early infancy following prenatal alcohol exposure.
Main Methods:
- Maternal interviews assessed alcohol and substance use during the perinatal period.
- Infants (6-8 weeks old) underwent laboratory nap studies with EEG, videography, and actigraphy.
- Infants were categorized into high and low maternal alcohol use groups based on exposure estimates.
Main Results:
- Maternal alcohol consumption correlated with poorer infant alertness and increased irritability.
- Infants in high exposure groups exhibited fragmented sleep and reduced active sleep.
- Prenatal alcohol exposure was associated with shorter durations of spontaneous movement bouts during sleep.
Conclusions:
- Prenatal alcohol exposure negatively impacts postnatal sleep organization and suppresses spontaneous movements.
- Sleep fragmentation and deprivation resulting from alcohol exposure may contribute to SIDS risk.
- Attenuated sleep-related movements in high-risk infants warrant further investigation for their role in cardiorespiratory regulation.
Background:
Infants exposed prenatally to alcohol are at increased risk for poor neurodevelopmental outcome including Sudden Infant Death Syndrome.
Aim:
To examine the relationship between prenatal alcohol exposure, sleep, arousal and sleep-related spontaneous motor movements in early infancy.
Study Design:
Low-income women (N=13) were interviewed regarding pre- and pregnancy rates of alcohol, cigarette smoking and other substance use in the perinatal period. Infants were examined in a laboratory nap study using EEG, videography and actigraphy at 6-8 weeks of age. Estimates of maternal pre- and pregnancy alcohol use were used to divide infants into high vs. low maternal alcohol use groups.
Subjects:
Mother-infant dyads recruited from a family practice clinic.
Outcome Measures:
Sleep-related spontaneous movements, behavioral state, and maternal assessments of infant alertness and irritability.
Results:
Pre-pregnancy rates of alcohol consumption including binge drinking correlated with maternal report of poor infant alertness, and increased irritability. High maternal exposure groups showed increased sleep fragmentation, e.g., frequency and duration of wakefulness following sleep onset and decreased active sleep. Bout analysis of the temporal structure of sleep-related spontaneous movements showed significantly reduced bout duration associated with high maternal alcohol use.
Conclusion:
These results present evidence that prenatal alcohol exposure disrupts postnatal sleep organization and suppresses spontaneous movements during sleep, and increased sleep fragmentation promotes sleep deprivation. Results are consistent with the SIDS model of chronic sleep debt and suggest that attenuated sleep-related movements should be examined as an important modulator of cardiorespiratory functions during sleep in high-risk groups.
More Related Videos
15:27Construction of Vapor Chambers Used to Expose Mice to Alcohol During the Equivalent of all Three Trimesters of Human Development
Published on: July 13, 2014
19:57The Use of Trace Eyeblink Classical Conditioning to Assess Hippocampal Dysfunction in a Rat Model of Fetal Alcohol Spectrum Disorders
Published on: August 5, 2017
Related Concept Videos
01:13Insufficient Sleep and Sleep Deprivation
Sleep deprivation is a more severe form of sleep loss...
01:24Substance Use Disorders Affecting Sleep
Understanding the concepts of physical dependence,...
01:17Sleepwalking and Sleep Talking
Factors that increase the likelihood of sleepwalking include sleep deprivation and alcohol consumption. Contrary to common beliefs, it is safe...