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Related Experiment Videos

Methadone and neonatal thrombocytosis.

Oscar García-Algar1, Lourdes Florensa Brichs, Eva Sánchez García

  • 1Pediatrics Department, Hospital del Mar, Universitat Autònoma de Barcelona, Spain. 90458@imas.imim.es

Pediatric Hematology and Oncology
|April 9, 2002
PubMed
Summary

Maternal methadone use can cause late-onset neonatal withdrawal and rare thrombocytoses (low platelet counts) in newborns. Affected infants require a minimum two-week hospital stay for platelet count monitoring.

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Area of Science:

  • Neonatal medicine
  • Pharmacology
  • Pediatric hematology

Background:

  • Maternal methadone treatment is common for opioid use disorder.
  • Neonatal withdrawal syndrome (NWS) is a known risk.
  • Late-onset NWS can occur after hospital discharge.

Observation:

  • Neonatal thrombocytoses (low platelet counts) are exceptionally rare.
  • Methadone exposure in utero has been anecdotally linked to thrombocytoses.
  • This study observed thrombocytoses in newborns exposed to methadone.

Findings:

  • Neonatal thrombocytoses are a rare but potential complication of maternal methadone treatment.
  • Affected newborns exhibited significantly low platelet counts.
  • The thrombocytoses appeared to be induced by methadone exposure.

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Implications:

  • Neonatal thrombocytoses require careful monitoring in infants born to mothers on methadone.
  • Extended hospital admission (≥2 weeks) is necessary for monitoring platelet counts.
  • Further research is needed to understand the mechanism and long-term effects of methadone-induced thrombocytoses.