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Assessment and Evaluation of the High Risk Neonate: The NICU Network Neurobehavioral Scale
Published on: August 25, 2014
Prenatal drug exposure and maternal and infant feeding behaviour
L L LaGasse1, D Messinger, B M Lester
1Brown Medical School, Women & Infant's Hospital and Bradley Hospital, Providence, RI, USA. University of Miami, Miami, FL, USA. linda_lagasse@brown.edu
Insights
Prenatal opiate exposure in infants led to more feeding problems and heightened arousal, with mothers also showing increased feeding activity. Cocaine exposure did not impact infant feeding but affected maternal engagement.
Area of Science:
- Neonatal development
- Maternal-infant interaction
- Substance exposure effects
Background:
- Prenatal exposure to substances like cocaine and opiates can impact infant development.
- Understanding feeding behaviors and maternal interactions is crucial for assessing infant well-being.
Purpose of the Study:
- To evaluate feeding difficulties and maternal behavior in infants exposed prenatally to cocaine and/or opiates.
- To differentiate effects of cocaine versus opiate exposure on infant feeding and maternal interaction.
Main Methods:
- Part of the Maternal Lifestyle Study, analyzing videotaped feeding sessions of 1-month-old infants.
- Included infants exposed to cocaine, opiates, both, and matched controls.
- Coded infant sucking, arousal, feeding problems, and maternal activity/interaction.
Main Results:
- No significant effects of cocaine exposure on infant feeding measures were observed.
- Cocaine-exposed infants' mothers showed less engagement and shorter feeding sessions.
- Opiate-exposed infants exhibited prolonged sucking, fewer pauses, more feeding problems, and increased arousal.
- Mothers of opiate-exposed infants displayed increased activity, independent of infant feeding issues.
Conclusions:
- Feeding issues in cocaine-exposed infants may stem from interaction quality, not direct exposure effects.
- Opiate-exposed infants and their mothers demonstrated heightened arousal and feeding behaviors.
- Findings highlight distinct impacts of prenatal cocaine and opiate exposure on infant-mother feeding dynamics.
Objective:
To evaluate feeding difficulties and maternal behaviour during a feeding session with 1 month old infants prenatally exposed to cocaine and/or opiates.
Methods:
The study is part of the maternal lifestyle study, which recruited 11 811 subjects at four urban hospitals, then followed 1388 from 1 to 36 months of age. Exposure to cocaine and opiates was determined by maternal interview and meconium assay. At the 1 month clinic visit, biological mothers were videotaped while bottle feeding their infants. This sample included 364 exposed to cocaine, 45 exposed to opiates, 31 exposed to both drugs, and 588 matched comparison infants. Mothers were mostly black, high school educated, and on public assistance. Videotapes were coded without knowledge of exposure status for frequency, duration and quality of infant sucking, arousal, feeding problems, and maternal feeding activity and interaction.
Results:
No cocaine effects were found on infant feeding measures, but cocaine-using mothers were less flexible (6.29 v 6.50), less engaged (5.77 v 6.22), and had shorter feeding sessions (638 v 683 seconds). Opiate exposed infants showed prolonged sucking bursts (29 v 20 seconds), fewer pauses (1.6 v 2.2 per minute), more feeding problems (0.55 v 0.38), and increased arousal (2.59 v 2.39). Their mothers showed increased activity (30 v 22), independent of their infants' feeding problems.
Conclusions:
Previous concerns about feeding behaviour in cocaine exposed infants may reflect the quality of the feeding interaction rather than infant feeding problems related to prenatal exposure. However, opiate exposed infants and their mothers both contributed to increased arousal and heightened feeding behaviour.
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