Vasodilators sublingual nitroglycerin

The nurse is teaching the client diagnosed with angina about sublingual nitroglycerin (NTG), a coronary vasodilator. Which statement indicates the client needs more medication teaching ... 

Administration of vasodilators such as sodium nitroprusside (intravenous) and nitroglycerin (sublingual) promptly relieves the symptoms of acute pul-... 

Other nitrates are similar to nitroglycerin in their pharmacokinetics and pharmacodynamics. Isosorbide dinitrate is another commonly used nitrate it is available in sublingual and oral forms. Isosorbide dinitrate is rapidly denitrated in tbe liver to isosorbide mononitrate, which is also active. Isosorbide mononitrate is available as a separate drug for oral use. Several other nitrates are available for oral use and, like the oral nitroglycerin preparation, have an intermediate duration of action (4-6 hours). Amyl nitrite is a volatile and rapidly acting vasodilator that was used for angina by the inhalational route but is now rarely prescribed. 

If spasm of the ovarian vein occurs during selective catheterization then forceful injection of 5 cc of normal saline followed by a wait of 4-5 min is usually sufficient to allow resolution. The use of injectable vasodilators such as nitroglycerin has not been successful in the author s hands. If resolution of spasm is not possible, the procedure can be attempted on another occasion and at that instance the patient provided with sublingual nifedipine and intravenous sedation prior to the procedure. 

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