Pharmacological Management
Oral Nitrates and Hydralazine
Nitrates and hydralazine are vasodilators that reduce preload and afterload, respectively, thereby reducing myocardial workload and oxygen consumption.
Although studies have shown that a combination of isosorbide dinitrate and hydralazine improves survival in patients with chronic congestive heart failure,1-2 there is no evidence that oral or transdermal nitrates improve prognosis following MI.3
Nitrates continue to be first-line therapy for angina pectoris, but European guidelines do not advocate the use of either nitrates or hydralazine for secondary prevention following MI.3,4
References:
- Davies MK, Gibbs CR, Lip GYH. Management: diuretics, ACE inhibitors, and nitrates. In: Gibbs CR, Davies MK, Lip GYH, eds. ABC of heart failure. London: BMJ Books, 2003;25-28.
- Cohn JN, Archibald DG, Ziesche S, et al. Effect of vasodilator therapy on mortality in chronic congestive heart failure. Results of a Veterans Administration Cooperative Study. N Engl J Med 1986;314:1547-52.
- van de Werf F, Bax J, Betriu A, et al. Management of acute myocardial infarction in patients presenting with persistent ST-segment elevation. The Task Force on the management of ST-segment elevation acute myocardial infarction of the European Society of Cardiology. Eur Heart J 2008;29:2909-45.
- Bassand J-P, Hamm CW, Ardissino D, et al. Guidelines for the diagnosis and treatment of non-ST-segment elevation acute coronary syndromes. The Task Force for the Diagnosis and Treatment of Non-ST-Segment Elevation Acute Coronary Syndromes of the European Society of Cardiology. Eur Heart J 2007;28:1598-660.