Digitalis induced arrhythmia is a heart rhythm disorder triggered by the use or toxicity of digitalis medications, especially digoxin. Digitalis is commonly prescribed to manage heart failure and atrial fibrillation. However, at toxic levels or in sensitive individuals, it can disturb the normal electrical conduction of the heart, leading to abnormal rhythms.
These irregular heartbeats can. Cardiac glycosides (primarily digoxin) are used clinically in two situations: in heart failure with reduced ejection fraction [1,2] and in certain supraventricular tachyarrhythmias [3,4]. This article concerns adverse side effects of digoxin treatment, with emphasis on ECG changes, arrhythmias and conduction disturbances.
Digoxin may cause all known cardiac arrhythmias. Digitalis- induced ventricular arrhythmias can be abolished in the experimental animal by sympathetic ablation or by depletion of the myocardium of norepinephrine; atrial and ventricular arrhythmias have been abolished by beta-adrenergic re- ceptor blockade in both animals and man.121,122 When A-V block is induced by digitalis, however, beta. Acute digitalis toxicity can result from unintentional, suicidal, or homicidal overdose of the digitalis preparation digoxin, or accidental ingestion of plants that contain cardiac glycosides.
Chronic toxicity in patients on digoxin therapy may result from deteriorating renal function, dehydration, electrolyte disturbances, or drug interactions. Abstract Six cases of digitalis intoxication presenting with cardiac arrhythmias are described. Multiple cardiac arrhythmias consisting of multifocal, or unifocal, multiform ventricular ectopic beats, bidirectional tachycardia, complete heart block, accelerated junctional rhythm with exit block, nonparoxysmal junctional tachycardia, atrial fibrillation, atrial tachycardia with block, and.
Nonetheless, digitalis intoxication is still with us and may be just as frequent as in the past. 2 Cardiac arrhythmias are a common presentation of intoxication, and they may require therapy while the intoxication resolves. The arrhythmias of digitalis intoxication arise from two actions of the drug.
Digoxin is a medication derived from the leaves of the foxglove plant. It has been used for over two centuries to treat various heart conditions, particularly heart failure and atrial fibrillation. While digoxin can be effective in controlling heart rate and improving cardiac output, it can also lead to significant side effects, including arrhythmias.
Understanding the relationship between. Supportive care of digitalis toxicity includes hydration with IV fluids, oxygenation and support of ventilatory function, discontinuation of the drug, and, sometimes, the correction of electrolyte imbalances. Effective management also relies on early recognition that a dysrhythmia and/or noncardiac manifestation may be related to digitalis intoxication.
General principles of management include. Digitalis electrophysiology is straightforward by comparison with the impenetrable controversy which surrounds its use in chronic heart failure. In the following account, inotropic effects are mentioned only en passant, and the term digitalis is used to describe all glycoside- like compounds, whether or not derived from digitalis plants.