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.
Categories of Blood Vessels .â¢3 Capillaries-by far the most numerous and extensive of all blood vessels.â¢ Exhibit the greatest total cross-sectional area of all vessels. Capillary walls are extremely thin and 'porous'- 1 cell-layer thick.â¢ Serve as area of exchange of materials between blood and tissues.eripheral resistance.â¢ b. Blood pressure.â¢ c. Total blood flow.â¢ d. Direction of blood flow.â¢ Arterioles are very numerous therefore they will exhibit a greater total cross-sectional area than arteries.â¢ Total cross sectional area = sum of the C.S.A. of all blood vessels of a particular type.