Use of enalapril in neonatal hypertension.

Treatment of hypertension with enalapril in a preterm infant is described. Enalapril is a new converting enzyme blocker with a longer plasma half-life and less side effects than captopril. Oral administration of enalapril 0.1 mg/kg caused severe hypotension and renal failure in a preterm infant. We recommend an oral starting dose of 0.01 mg/kg in preterm infants and extremely close monitoring of infants receiving the first dose of enalapril.