Implication of Haemodiafiltration Flow Rate on Amikacin Pharmacokinetic Parameters in Critically Ill Patients

Autores de IIS La Fe

• Jesús Ruiz Ramos

  Autor

• Esther Villarreal Tello

  Autor

• Mónica Gordón Sahuquillo

  Autor

• Gemma Pastor Cerezuela

  Autor

• María Jesús Broch Porcar

  Autor

• María Remedios Marques Miñana

  Autor

• José Luis Poveda Andrés

  Autor

• Álvaro Castellanos Ortega

  Autor

• Paula Ramírez Galleymore

  Autor

Grupos

• Farmacogenética

• Infecciones Respiratorias

• Medicina Intensiva

Abstract

Background: To analyse the effect of haemodiafiltration (CVVHDF) flow rate on amikacin pharmacokinetics and blood concentrations. Methods: Prospective observational study. Patients receiving CVVHDF and amikacin treatment were included. Pharmacokinetic parameters were calculated using Bayesian analysis. Spearman correlation test was used in order to assess the influence of CVVHDF flux on amikacin minimum concentration (C-min) and plasma clearance. Results: Thirty patients undergoing CVVHDF procedures were included. The treatment with amikacin started at an initial mean dose of 12.4 (4.1) mg/kg/day. An association between the flow rate and Cmin value (r = 0.261; p = 0.161) and plasma clearance was found (r = 0.268; p = 0.152). Four patients (13.3%) were not able to achieve peak concentration over MIC value higher than 8. In 4 patients, amikacin had to be discontinued due to a high C-min value. Conclusions: Amikacin clearance in patients with CVVHDF is affected by the flow rate used. Therefore, CVVHDF dose should be taken into account when dosing amikacin. (c) 2017 S. Karger AG, Basel

Keywords

• Infection; Pharmacokinetics; Haemofiltration