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Digoxin in heart failure.

Anne P Spencer¹

¹Department of Pharmacy Practice, College of Pharmacy, Medical University of South Carolina, 280 Calhoun Street, Suite QE213A, PO Box 250132, Charleston, South Carolina, USA. spenceap@musc.edu

Critical Care Nursing Clinics of North America

|January 14, 2004

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Digoxin offers clinical benefits for heart failure patients, including improved exercise tolerance and fewer hospitalizations. Maintaining low serum concentrations (0.8-1.0 ng/mL) helps avoid digoxin toxicity.

Area of Science:

Cardiology
Pharmacology

Background:

Digoxin has a long history in heart failure management.
It provides inotropic augmentation and modulates neurohormonal activation.
Recent research quantifies its benefits in heart failure.

Purpose of the Study:

To summarize the quantified benefits of digoxin in heart failure.
To highlight the importance of target serum concentrations.
To provide guidance on avoiding digoxin toxicity.

Main Methods:

Review of existing literature on digoxin in heart failure.
Analysis of clinical trial data regarding efficacy and safety.
Assessment of factors influencing digoxin levels and toxicity.

Main Results:

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Long-term digoxin therapy does not decrease mortality.
Clinical benefits include improved exercise tolerance and reduced hospitalizations.
Optimal serum concentrations for benefit are 0.8-1.0 ng/mL.

Conclusions:

Digoxin provides significant clinical benefits in heart failure.
Therapeutic drug monitoring is crucial for efficacy and safety.
Avoiding toxicity requires attention to serum levels, hypokalemia, renal function, and drug interactions.