Alprostadil

Maintains patency of ductus arteriosus in cyanotic heart lesions. Direct vasodilation of ductus smooth muscle.
Neonates and infants: 0.05–0.1 μg/kg/min as continuous IV infusion may gradually increase to maximum of 0.4 μg/kg/min or wean as low as 0.005 μg/kg/min, depending on response.