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Association of Polysubstance Exposure and Neonatal Weight Loss Among Infants Exposed to Opioids
Nicole Andersen1, Andrew Wiese1, Nicolas Gargurevich2
1Department of Health Policy, Vanderbilt University Medical Center, Nashville, TN.
Insights
Infants exposed to opioids and other substances showed increased neonatal weight loss. Medications for opioid use disorder (MOUD) and nonopioid drug exposures were linked to greater weight loss in newborns.
Area of Science:
- Neonatal Health
- Pharmacology
- Public Health
Background:
- Opioid exposure in utero affects infant development.
- Neonatal weight loss is a critical indicator of infant health.
- Understanding risk factors for excessive weight loss is crucial for clinical management.
Purpose of the Study:
- To characterize weight trajectories in opioid-exposed infants.
- To evaluate the association between various prenatal exposures and excessive neonatal weight loss.
Main Methods:
- Retrospective cohort study using linked electronic health records, vital records, and claims data (2010-2021).
- Characterized prenatal exposures including medications for opioid use disorder (MOUD), non-MOUD opioids, and other substances.
- Assessed neonatal weight loss as maximum percentage decrease from birth weight within the first 14 days.
Main Results:
- Among 868 opioid-exposed infants, 71.7% had additional prenatal substance exposures.
- Infants with additional exposures exhibited greater median weight loss and a later nadir.
- MOUD prescriptions and positive toxicology for nonopioid drugs were associated with increased maximum percentage weight loss.
Conclusions:
- Prenatal exposure to MOUD and nonopioid substances is linked to greater weight loss in opioid-exposed neonates.
- Findings can guide clinical strategies to manage and mitigate neonatal weight loss.
- Further research may explore specific interventions for at-risk infants.
Objective:
To characterize the weight trajectories of infants exposed to opioids and evaluate the association between different exposures and risk of excessive neonatal weight loss.
Study Design:
Using mother-baby linked electronic health records, vital records, and claims data, we identified a retrospective cohort of infants exposed to opioids born at a large, academic medical center (2010-2021). We characterized prenatal substance exposures 90 to 2 days before delivery, including medications for opioid use disorder (MOUD), non-MOUD opioids, selective serotonin reuptake inhibitors, benzodiazepines, gabapentin, cigarette smoking, and toxicology evidence of opioids and nonopioid exposures (eg, barbiturates, cannabinoids, amphetamines, cocaine). We parameterized neonatal weight loss as the maximum percentage decrease from birth weight in the first 14 days of life during birth hospitalization. We used multivariable linear regression to compare the association between prenatal exposures and maximum percentage weight loss.
Results:
Among 868 maternal-infant dyads exposed to opioids that were identified, 622 (71.7%) had prenatal exposure to at least 1 additional substance. Infants with additional prenatal exposures had a greater median weight loss and a later nadir in weight loss compared with those without additional exposures (P < .001). In analyses examining individual substances, MOUD prescriptions (coefficient 0.99; 95% CI 0.50-1.48) and positive toxicology for nonopioid drugs (coefficient 0.53; 95% CI 0.08-0.98) were associated with a greater maximum percentage weight loss.
Conclusions:
Exposure to MOUD and nonopioid exposures were associated with greater weight loss among infants exposed to opioids during the first 14 days of life. These findings inform the clinical management of infants exposed to opioids to mitigate weight loss during the neonatal hospitalization.
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