Treatment of Cardiac Glycoside Toxicity in Adults on Chronic Digoxin Therapy with Elevated Digoxin Levels
Clinical Scenario
This protocol addresses adult patients on regular, ongoing digoxin therapy who develop an elevated or increased serum digoxin level — without taking extra doses — and who present with signs or symptoms of digoxin toxicity. The clinical picture is not immediately life-threatening.
Key Context
In chronic digoxin toxicity, the rise in serum level occurs within the setting of established therapeutic use. Both the serum digoxin concentration and concurrent electrolyte status factor into the appropriate clinical response. The protocol is specific to this adult, non-acute-overdose scenario.
Treatment Approach (partial)
Management includes a specific antidote-class therapy, triggered by defined serum concentration or electrolyte criteria. The indication depends on which threshold is met — concentration-based or electrolyte-based — and not all presentations require the same pathway.
Full criteria, sequencing, and the complete clinical decision algorithm are available in the structured protocol below.
References
DOI: 10.1016/j.amjmed.2024.08.018
- Chronic: no bolus but an increase in the digoxin level or elevated level in patient who has been taking digoxin regularly and denies taking extra doses.
- In adult patients on chronic digoxin therapy that have signs or symptoms of digoxin toxicity with no other reason for hyperkalemia, serum potassium concentration of X mEq/L would be indication for digoxin Fab therapy.
- In the absence of other clinical findings, a digoxin concentration of X ng/mL is an indication for digoxin Fab therapy in chronic ingestions.
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