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  • Title: Is there an expanded role for digoxin in patients with heart failure and sinus rhythm? A protagonist viewpoint.
    Author: Williamson KM, Patterson JH.
    Journal: Ann Pharmacother; 1997; 31(7-8):888-92. PubMed ID: 9220052.
    Abstract:
    The evidence supporting the efficacy of digoxin in patients with heart failure who are in sinus rhythm is substantial. Digoxin improves hemodynamics, exercise capacity, symptoms, and quality of life and reduces hospitalizations. All of this is accomplished with a drug that is very inexpensive and can be given once daily. Its safety has been established through the DIG trial. Although digoxin does not decrease mortality beyond that of diuretics and ACE inhibitors, it does not increase mortality, unlike many positive inotropes. Furthermore, digoxin, in addition to ACE inhibitors and a diuretic, decreases the hospitalization rate due to worsening of heart failure. From a managed care perspective, as well as that of the patient, this is of enormous benefit. A pharmacoeconomic analysis estimated that continuation of digoxin in patients with stable congestive heart failure could save the healthcare system an estimated $ 400 million, based on costs from one hospital. The issue is not whether to use digoxin in these patients, but rather, how early to initiate therapy. From some of the recent data in patients with systolic dysfunction and mild heart failure, as well as knowledge of the neurohormonal activation that occurs early in these patients, it could be suggested that early use of neurohormonal modulators, including digoxin, would decrease the progression of heart failure. Thus, rather than waiting for symptoms despite optimal doses of an ACE inhibitor and diuretic, as suggested by the AHCPR practice guideline for heart failure, initiation of digoxin therapy in patients as early as NYHA class II at a dosage that will achieve a serum concentration of 1.0 ng/mL or less should occur. With the understanding of digoxin's effect on the neurohormonal systems, its role in patients with preserved systolic function needs to be reexplored. The debate can now focus on asymptomatic patients or those with preserved systolic function. Could these patients benefit from therapy with digoxin as well?
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