The relationship of the initial phenobarbital dose to weight, gestational age, blood level, and seizure control was studied in 39 neonates. The blood proportional to the dosage per kilogram, and was not related to weight or gestational age. Seizures remitted only at blood phenobarbital concentrations above 16.9 micrograms per milliliter. Therapeutic levels can be achieved by the intravenous or intramuscular administration of 16 to 23 mg per kilogram of phenobarbital.

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Detailed attempts to isolate pathogens were made during an apparent epidemic outbreak of neonatal necrotizing enterocolitis (NEC). In addition, all cases of infants with this disease since 1964 were reviewed for comparison with the present outbreak. Efforts were made to determine a transmissible cause. No bacteria, virus, or fungus common to the infants involved in the outbreak was isolated. Neither could any other

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