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When it comes to infants and young children, they are typically administered smaller doses of medication in comparison to adults. This is primarily because their organ functions still need to fully develop, meaning their bodies are not as efficient at metabolizing or eliminating drugs. Additionally, their blood-brain barrier is more permeable than in adults. As a result, high concentrations of drugs can easily penetrate the central nervous system (CNS), potentially leading to neurological...
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Accuracy in Detecting Prenatal Drug Exposure.

Robert E Arendt1, Lynn T Singer1, Sonia Minnes1

  • 1, Ph.D., is an Assistant Professor of Pediatrics at Case Western Reserve University. His research interests indude motor development and prenatal drug exposure. , Ph.D., is a Professor of Pediatrics at Case Western Reserve University, and director of the Center for the Advancement of Mothers and Children at MetroHealth Medical Center. The Center, which serves a predominately underprivileged inner-city population of children at risk for developmental disabilities, provides clinical services and research support for studies in physiological, psychological, and social aspects of prenatal drug exposure. , Ph.D., is the coordinator of Project Newborn, a longitudinal study of prenatally cocaine exposed infants and their mothers, at Case Western Reserve University. Her research emphasizes the psychological and cognitive effects of chronic substance abuse on women. , M.S., is a biostatistician with the Division of Clinical Epidemiology, Department of Pediatrics at Case Western Reserve University. Her research focus is on clinical trials and longitudinal research. Address correspondence and reprint requests to Case Western Reserve University, Department of Pediatrics, 11100 Euclid Ave., Cleveland, OH 44106-6038.

Journal of Drug Issues
|July 29, 2021
PubMed
Summary

Accurately identifying prenatal cocaine exposure in infants requires multiple methods. Combining maternal interviews and meconium analysis offers the most sensitive approach for detecting and quantifying exposure.

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Area of Science:

  • Perinatal Health
  • Neonatal Toxicology
  • Drug Exposure Assessment

Background:

  • Accurate identification and quantification of prenatal drug exposure remain challenging.
  • Prenatal cocaine exposure can have significant effects on infant development.
  • Reliable methods are needed to assess exposure for research and clinical purposes.

Purpose of the Study:

  • To evaluate the validity and sensitivity of different methods for identifying prenatal cocaine exposure.
  • To compare the accuracy of medical records, maternal urine toxicology, meconium analysis, and maternal interviews.
  • To determine the best biological marker and combination of techniques for quantifying cocaine exposure.

Main Methods:

  • Established drug exposure status for 415 infants using a combination of medical record review, maternal urine toxicology screens, meconium analysis, and maternal postpartum interviews.
  • Utilized this multi-source approach as a benchmark for evaluating individual methods.
  • Correlated cocaine levels in meconium with maternal self-reports.

Main Results:

  • Maternal postpartum interviews were the most sensitive method for detecting exposure.
  • Medical record review showed slightly lower accuracy compared to interviews.
  • Meconium analysis and urine screens had higher miss rates but detected cases missed by other methods.
  • Benzoylecgonine in meconium correlated with maternal reports, serving as a key biomarker.
  • Quantifying exposure levels required combining meconium analysis and maternal interviews.

Conclusions:

  • A combination of maternal interviews and meconium analysis is recommended for comprehensive prenatal cocaine exposure assessment.
  • Benzoylecgonine is a reliable biomarker for cocaine exposure.
  • No single method is sufficient; a multi-faceted approach improves accuracy in identifying and quantifying prenatal cocaine exposure.