Renal Clearance (CLr)
CLrThe volume of plasma from which a drug is completely removed by the kidneys per unit time. Renal clearance encompasses glomerular filtration, active tubular secretion, and passive tubular reabsorption. It is a major determinant of dosing adjustments in patients with impaired kidney function.
Exemples
- Metformin: primarily renally cleared, requires dose reduction in CKD
- Digoxin: 60-80% renal elimination, monitor in renal impairment
- Cockcroft-Gault equation used to estimate creatinine clearance for dose adjustment
Le saviez-vous ?
The volume of plasma from which a drug is completely removed by the kidneys per unit time. Renal clearance encompasses glomerular filtration, active tubular secretion, and passive tubular reabsorption. It …