N-Acetylcysteine to Prevent Radiocontrast Nephropathy in Emergency Department Patients

"Experimental:~* Before CT: 3 g NAC IV in 500 cc of 0.9% Sodium-chloride~* After CT: 200 mg NAC/hour in 0.9% Sodium-chloride at 67 cc/hour for up to 24 hours."

"Placebo:~* Before CT: 500 cc 0.9% Sodium-chloride~* After CT: NS at 67 cc/hour for up to 24 hours."