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Long-term Behavioral and Reproductive Consequences of Embryonic Exposure to Low-dose Toxicants
Published on: March 6, 2018
Developmental outcome in children with intrauterine exposure to substances
H-C Steinhausen1, B Blattmann, F Pfund
1Department of Child and Adolescent Psychiatry, University of Zürich, Zürich, Switzerland. steinh@kjpd.unizh.ch
Insights
Children born to mothers undergoing substance abuse treatment showed lower intellectual functioning. Intrauterine exposure to heroin and methadone significantly impacted developmental outcomes, highlighting risks associated with prenatal substance use.
Area of Science:
- Developmental Psychology
- Neuroscience
- Public Health
Background:
- Substance-dependent mothers in residential treatment pose risks to child development.
- Prenatal exposure to substances can lead to adverse developmental outcomes.
- Understanding specific risk factors is crucial for early intervention.
Purpose of the Study:
- To assess the developmental outcomes of children born to substance-dependent mothers.
- To identify biological and psychosocial risk factors associated with developmental outcomes.
- To investigate the impact of intrauterine substance exposure on intellectual functioning.
Main Methods:
- Studied 61 children (infancy to preadolescence) of mothers in a Swiss residential treatment program.
- Utilized age-appropriate intelligence tests to assess developmental outcomes.
- Analyzed associations between various biological and psychosocial risk factors and child outcomes.
Main Results:
- Children's mean intellectual functioning was significantly lower than population norms.
- An excess of children exhibited subnormal intellectual functioning.
- Performance IQ was negatively associated with intrauterine substance exposure, particularly heroin and methadone, independent of other substance use.
Conclusions:
- Intrauterine exposure to heroin and methadone negatively affects offspring developmental outcomes.
- Prenatal substance exposure is a significant risk factor for intellectual deficits in children of substance-dependent mothers.
- Further research and targeted interventions are needed to mitigate these developmental risks.
Abstract:
The developmental outcome of children born to Swiss substance-dependent mothers in a residential treatment program was studied in a sample of 61 children ranging from infancy to preadolescence (mean age = 5.10, SD = 3.10 years) by use of age-appropriate tests of intelligence. A large list of biological and psychosocial risk factors was tested for associations with outcome in the children. The mean profile of test findings across all age ranges was significantly lower than population norms and there was an excess of children with subnormal intellectual functioning. Performance IQ was associated negatively only with intrauterine substance exposure, but with none of the other risk factors. Among the various substances, predominantly heroin or methadone were responsible for this association when controls for nicotine or cannabis consumption were made. The study provides further evidence that intrauterine exposure to heroin and methadone negatively affects the developmental outcome in the offspring of substance-dependent mothers.
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