<prompt> All of the following are useful intravenous therapy for hypeensive emergencies except-FenodolpamUradipilEnalaprilNifedipine  <response>: Usual Intravenous Doses of Antihypeensive Agents Used in Hypeensive Emergencies Nitroprusside Initial 0.3 mgkgmin; usual 2-4 mgkgmin; maximum 10 mgkgmin for 10 min Nicardipine Initial 5 mgh; titrate by 2.5 mgh at 5-15 min intervals; max 15 mgh Labetalol 2 mgmin up to 300 mg or 20 mg over 2 min, then 40-80 mg at 10-min intervals up to 300 mg total Enalaprilat Usual 0.625-1.25 mg over 5 min every 6-8 h; maximum 5 mgdose Esmolol Initial 80-500 mgkg over 1 min, then 50-300 mgkgmin Phentolamine 5-15 mg bolus Nitroglycerin Initial 5 mgmin, then titrate by 5 mgmin at 3-5-min intervals; if no response is seen at 20 mgmin, incremental increases of 10-20 mgmin may be used Hydralazine 10-50 mg at 30-min intervals ref:Harrison;s principles of internal medicine,ed 18,pg no 2058 