Intravenous Nitrite Infusion for Reversal of Cerebral Vasospasm After Subarachnoid Hemorrhage

Subjects will receive continuous intravenous infusion of study drug for 7 days at a dose of 64 nmol/min/kg. The infusion will begin shortly after angiographic demonstration of cerebral vasospasm and will be for 7 days unless side effects of the drug dictate stopping the infusion.