Abstract
Premature labor and patent ductus arteriosus are two potentially fatal hazards of the human newborn infant. Prostaglandin synthetase antagonists have thus been used to suppress early labor and to close the ductus of the neonate. Indomethacin has been most effective but not free of significant complications. Neuronal necrosis may result from numerous systemic aberrations. A controlled rat model study was therefore devised to investigate fetal neuronal necrosis in relation to maternal indomethacin dose. Dams were given various treatments of 2 mg/kg of 4 mg/kg indomethacin within the last 3 days of gestation. Liquid chromatography was used to assess serum maternal and fetal drug levels. From light microscopy of more than 200 brains it was apparent that fetal neuronal necrosis correlates with maternal dose.
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