Publicaciones científicas

Effects of hepatic function on vancomycin pharmacokinetics in patients with cancer

Aldaz A, Ortega A, Idoate A, Giráldez J, Brugarolas A.
Pharmacy Department, University Hospital of Navarra, Pamplona, Spain.

Revista: Therapeutic Drug Monitoring

Fecha: 01-jun-2000



Vancomycin is widely used in the prophylaxis and treatment of infections in neutropenic patients with cancer.

The objective of this study was to analyze liver damage effects on vancomycin pharmacokinetics and determine the necessity for liver function evaluation when selecting vancomycin dosing schedules in these patients. A population pharmacokinetic analysis was performed using the global two-stage method. To this purpose serum vancomycin concentrations from 154 cancer patients were measured and individual vancomycin pharmacokinetic parameters were estimated by the Sawchuk and Zaske method. Mean and standard deviation of the vancomycin pharmacokinetic parameters were estimated for various subgroups of patients classified according to the degree of liver damage. Then a multiple linear regression analysis was performed to select the best predictive models for vancomycin clearance (Clvan) and steady state distribution volume (V).

Results revealed that Clvan is not influenced by liver failure. Differences in V between patients with and without hepatic failure were initially observed, but these disappeared when patients with ascites were excluded. In conclusion, vancomycin dosing schedule does not need to be modified for patients with liver failure, with the exception of patients with ascites.

CITA DEL ARTÍCULO  Ther Drug Monit. 2000 Jun;22(3):250-7



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