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A score for prescribing digoxin
British Heart Journal
|February 1, 1978
Summary
A new method helps select adult digoxin maintenance doses using eight patient factors. This approach aims to improve therapeutic drug levels and patient outcomes compared to existing methods.
Area of Science:
- Pharmacology
- Clinical Pharmacy
- Internal Medicine
Background:
- Digoxin dosing requires careful consideration to maintain therapeutic serum concentrations.
- Existing methods for digoxin dose selection may have limitations in accuracy and applicability.
Purpose of the Study:
- To develop and validate a simple, data-driven method for selecting adult digoxin maintenance doses.
- To improve the predictability of achieving target serum digoxin concentrations.
Main Methods:
- A prescribing aid was developed using data from 129 adult patients on digoxin.
- The aid incorporates eight readily available patient variables: inpatient/outpatient status, sex, age, weight, mobility, cardiac rhythm, serum creatinine, and diuretic use.
Main Results:
- The method predicts that 72.3% of patients will achieve therapeutic serum digoxin concentrations.
- An additional 6.5% are expected to be above and 21.2% below the therapeutic range.
- This performance is anticipated to surpass that of other available prescribing aids.
Conclusions:
- The developed method offers a straightforward approach to digoxin maintenance dose selection.
- Routine serum digoxin concentration monitoring is advised for dose adjustments, particularly increases, to optimize therapy.