Fosphenytoin Description. Fosphenytoin Sodium Injection, USP is a prodrug intended for parenteral administration; its active metabolite is phenytoin. 1.5 mg of Fosphenytoin sodium is equivalent to 1 mg phenytoin sodium, and is referred to as 1 mg phenytoin sodium equivalents (PE).
The blood vessels may form scar tissue, which can pull on the retina causing a retinal detachment. A fluorescein angiogram is used to evaluate the retinal blood flow. Laser treatment is performed on those patients who develop neovascularization.
It is used primarily (but not exclusively) in patients with cirrhosis in which the scar tissue within the liver has blocked the flow of blood passing through the liver from the portal vein to the hepatic vein.