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  • Title: Determinants of the renal clearance of digoxin.
    Author: Halkin H, Sheiner LB, Peck CC, Melmon KL.
    Journal: Clin Pharmacol Ther; 1975 Apr; 17(4):385-94. PubMed ID: 1122680.
    Abstract:
    The renal clearances of digoxin, creatinine, and urea nitrogen were determined simultaneously in each of 41 patients receiving digoxin, in most of whom there was prerenal azotemia. Mean plus or minus SD values were: blood urea nitrogen (BUN), 26.1 plus or minus 12.8 mg per 100 ml; creatine, 1.1 + 0.41 mg per 100 ml; creatinine clearance, 78 plus or minus 42 ml/min/1.73 m2; digoxin clearance, 66.6 plus or minus 42.1 ml/min/1.73 m2; urea nitrogen clearance, 27.8 plus or minus 19.2 ml/min/1.73 m2. Correlation analysis revealed that urea clearance is superior to creatinine clearance, and BUN is superior to serum creatinine concentration in the degree of relationship to renal digoxin clearance. Moreover, using partial correlation techniques, it is apparent that in these patinets digoxin clearance was significantly related to urine flow rate. These findings are compatible with the hypothesis that digoxin undergoes some degree of tubular reabsorption as well as filtration and secretion.
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