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When, and when not, to use digoxin in the elderly
A T Gosselink1, D J van Veldhuisen, H J Crijns
1Department of Cardiology/Thoraxcenter, University Hospital Groningen, The Netherlands.
Insights
Digoxin can help manage heart failure symptoms and reduce hospitalizations. It may also control heart rate in chronic atrial fibrillation (AF), especially in elderly patients, but requires careful dosing to avoid toxicity.
Area of Science:
- Cardiology
- Pharmacology
Background:
- Digitalis, including digoxin, has a long history in treating cardiac conditions.
- Recent findings guide its current application in heart failure and atrial fibrillation (AF).
Purpose of the Study:
- To review the contemporary role of digoxin in managing heart failure and AF.
- To assess digoxin's efficacy and safety based on recent evidence.
Main Methods:
- Review of recent study findings on digoxin's use in heart failure and AF.
- Analysis of digoxin's effectiveness in different patient populations and clinical scenarios.
Main Results:
- Digoxin is considered for heart failure with systolic dysfunction when ACE inhibitors and diuretics are insufficient, potentially reducing hospital admissions.
- Digoxin can be effective for ventricular rate control in chronic AF, particularly in sedentary or elderly individuals.
- Digoxin is not effective for rhythm control or paroxysmal AF management and carries toxicity risks in the elderly, necessitating cautious dosing and alternative strategies.
Conclusions:
- Digoxin remains a valuable option for specific heart failure and AF management scenarios.
- Careful dosage titration and consideration of alternatives are crucial, especially in elderly patients, to maximize benefits and minimize toxicity.
Abstract:
Digitalis has been widely used in the treatment of cardiac disease for more than 200 years. The present article reviews the current role of digitalis in the management of heart failure and atrial fibrillation (AF) in light of recent study findings. Generally, first-line therapy for the management of heart failure due to systolic dysfunction should include an ACE inhibitor and a diuretic. In patients who remain symptomatic despite the use of these drugs, the addition of digoxin should be considered. Because digoxin has been shown to reduce the number of hospital admissions attributable to worsening heart failure, more liberal use of digoxin in the management of heart failure may be justified. Digoxin may be adequate as monotherapy for ventricular rate control in patients with chronic AF, particularly in sedentary and elderly patients. A beta-blocker or calcium antagonist (either alone or in combination with digoxin) is indicated when digoxin is ineffective for ventricular rate control. Digoxin is ineffective in restoring sinus rhythm, preventing paroxysms or controlling rate in paroxysmal AF. The elderly are at an increased risk of digoxin toxicity. Low dosages of digoxin appear to be effective in the treatment of heart failure due to systolic dysfunction and may reduce the incidence of digitalis toxicity in these patients. In elderly patients with AF and inadequate rate control who are receiving digitalis monotherapy, adding another atrioventricular nodal blocking drug may be more appropriate than increasing the digoxin dose, in order to avoid toxic digoxin levels.