Objective: Study aims to examine development in infants following prenatal heroin, methadone, and opioid exposure, which adversely affects central and autonomic nervous systems. Abrupt discontinuation results in neurologic and behavioral findings as Neonatal Abstinence Syndrome (NAS).
Method: Following NAS treatment, 28 infants (mean age 55 days [range 21-98 days], 57% male) were assessed using Bayley Scales of Infant and Toddler Development, Third Edition (Bayley-III) Cognitive, Language, and Motor subscales. Outcomes were compared with a historical control.
Results: Mean Language and Cognition scores were significantly lower (P < .001) in the NAS group. Distributions of scores for Language (P < .001) and Cognition (P = .022) were also significantly different between NAS and historical control groups.
Conclusion: Prenatal heroin, methadone, and other opioid exposure is associated with weaknesses in language and cognition. This information has important public health implications, drawing attention to an otherwise healthy infant population which may benefit from early intervention services.
Keywords: development; neonatal abstinence syndrome; prenatal drug exposure.
© The Author(s) 2014.