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Digoxin clearance and glomerular filtration rate.

C R Lucchini, L Padeletti, A Marsilii

    International Journal of Clinical Pharmacology and Biopharmacy
    |April 1, 1979
    PubMed
    Summary
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    Glomerular filtration rate better predicts digoxin clearance than creatinine clearance. This finding improves the accuracy of programmed digoxin therapy without increasing errors.

    Area of Science:

    • Pharmacokinetics and drug metabolism
    • Renal physiology and function

    Background:

    • Digoxin is a critical medication for heart failure and arrhythmias.
    • Accurate dosing of digoxin is essential due to its narrow therapeutic index.
    • Renal function significantly impacts digoxin elimination.

    Purpose of the Study:

    • To investigate the correlation between digoxin clearance and glomerular filtration rate (GFR).
    • To compare this correlation with the correlation between digoxin clearance and creatinine clearance (CrCl).
    • To assess the impact on programmed digoxin therapy accuracy.

    Main Methods:

    • Retrospective analysis of patient data.
    • Calculation of digoxin clearance.
    • Measurement of glomerular filtration rate.

    Related Experiment Videos

  • Measurement of creatinine clearance.

    • Main Results:

    • A stronger correlation was observed between digoxin clearance and GFR compared to digoxin clearance and CrCl.
    • This improved correlation did not increase the error in programmed digoxin therapy.

    Conclusions:

    • Glomerular filtration rate is a more reliable indicator of digoxin clearance than creatinine clearance.
    • Utilizing GFR in therapeutic drug monitoring can enhance digoxin dosing precision.