Ticarcillin-clavulanic acid pharmacokinetics in preterm neonates with presumed sepsis.
AUTOR(ES)
Burstein, A H
RESUMO
The objective of the reported study was to characterize the pharmacokinetics of ticarcillin and clavulanic acid in premature low-birth-weight (less than 2,200 g) neonates with presumed sepsis. Eleven infants received 12 courses of ticarcillin-clavulanic acid at 75 mg/kg of body weight intravenously every 12 h. Blood samples were collected at 0.5, 1.5, 4, and 8 h following the infusion of the initial dose. The concentrations of ticarcillin and clavulanic acid were determined by a microbiologic assay. Median (interpatient coefficients of variation) values for the volume of the central compartment, total steady-state volume, distributional clearance, total clearance, and terminal elimination half-life for ticarcillin were 0.030 liter/kg (21%), 0.26 liter/kg (48%), 0.41 liter/h/kg (47%), 0.047 liter/h/kg (47%), and 4.2 h (45%), respectively. For clavulanic acid the parameters were 0.28 liter/kg (32%), 0.36 liter/kg (34%), 11 liters/h/kg (36%), 0.12 liters/h/kg (72%), and 1.95 h (40%), respectively. Our results suggest that the current dosing recommendations of 75 mg/kg every 12 h risk subtherapeutic clavulanic acid concentrations and that 50 mg/kg every 6 h is a more rational dosing strategy.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=284678Documentos Relacionados
- Pharmacokinetics and distribution of ticarcillin-clavulanic acid (Timentin) in experimental animals.
- Ticarcillin-clavulanic acid zone size criteria.
- Ticarcillin-clavulanic acid for prophylaxis of postpartum puerperal infections.
- Reassessment of susceptibility test interpretive criteria for ticarcillin and ticarcillin-clavulanic acid.
- Relevant breakpoints for ticarcillin-clavulanic acid should be set primarily with data from ticarcillin-resistant strains.