A premature baby’s brain development and sleep patterns can be affected if prenatal exposure to smoking is high, reveals a new study.
According to the results, preterm neonates born to heavy-smoking mothers who smoked more than 10 cigarettes per day lead to disrupted sleep structure and sleep continuity-from 7 p.m. to 8 a.m. they slept almost two hours less than controls who were born to non-smoking mothers, and their sleep was more fragmented.
About Sleep Disturbances
The physical, emotional and hormonal changes that occur in women during puberty, menstrual cycle, pregnancy, and menopause can cause Sleep Disturbances
The physical, emotional and hormonal changes that occur in women during puberty, menstrual cycle, pregnancy, and menopause can cause Sleep Disturbances
Frederic Telliez, principal investigator, and professor of neuroscience at the University of Picardie Jules Verne in Amiens, France said that sleep integrity is critical in the brain development of neonates.
Also, he said that the disruption of sleep mechanisms by prenatal smoking exposure may predispose neonates to alterations in some physiological function (such as ventilation) and can result in long-term neurocognitive disorders.
About Sleep Disorder
Sleep disorders can either be having difficulty in getting sleep or dozing off at inappropriate time.
Sleep disorders can either be having difficulty in getting sleep or dozing off at inappropriate time.
Prenatal smoking exposure can lead to deficits in sustained attention and impulsivity in adolescence and a higher risk of attention-deficit/hyperactivity disorder in childhood.
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"The developing brain is known for its plasticity and ability to reorganize in response to the stimulation provided by the postnatal environment," said Telliez.
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Premature And Still Births Can Be Reduced With Novel Test Developed
Scientists at Sydney's Royal North Shore Hospital have made a breakthrough in foetal medicine after developing a new test that will reduce the risk of premature and still births.
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For the study, the researchers recruited 40 healthy preterm neonates (postconceptional age approximately 33.9 weeks) from the neonatal intensive care unit at Amiens University Medical Center in France.
It was found that the neonates born to heavy-smoking mothers had a significantly lower mean birth weight than controls. Their average weight of 2.92 pounds was 21 percent less than the average weight of controls, which was 3.69 pounds.
Neonates born to mothers who smoked less than 10 cigarettes per day had a birth weight that was 11 percent lower than controls, although this result did not achieve statistical significance.
The study also found that even after 29.7 days without postnatal exposure to smoking or nicotine, and despite the fact that neonates in the heavy-smoking group were nearly 10 days older, infants exposed in utero to high levels of smoking still showed an altered organization of the various behavioral states.
The researchers said that examining the neurodevelopmental trajectories of neonates exposed to maternal smoking (and of those who were not) could lead to greater understanding of potential deficits in the exposed group, better prediction of outcomes, and potentially more effective compensatory clinical interventions.
Researchers also stated that longitudinal studies are necessary to assess the persistence of behavioral state effects caused by prenatal smoking exposure.
The study is published in the latest issue of the journal Sleep.
Source-ANI
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