Variability in protein binding of teicoplanin and achievement of therapeutic drug monitoring targets in critically ill patients: Lessons from the DALI Study
- Authors: Roberts JA; Lipman J; Starr T; Wallis SC; Paul S; Ribas AM; De Waele JJ; DeCrop L; Spapen H; Wauters J; Dugernier T; Jorens P; Dapper I; De Backer D; Taccone FS; Rello J; Ruano L; Afonso E; Alvarez-Lerma F; Gracia-Arnillas MP; Fernández F; Feijoo N; Bardolet N; Rovira A; Garro P; Colon D; Castillo C; Fernado J; Lopez MJ; Fernandez JL; Arribas AM; Teja JL; Ots E; Montejo JC; Catalan M; Prieto I; Gonzalo G; Galvan B; Blasco MA; Meyer E; Nogal FD; Vidaur L; Sebastian R; Garde PM; Velasco Mdel M; Crespo RZ; Esperatti M; Torres A; Montravers P; Baldesi O; Dupont H; Mahjoub Y; Lasocki S; Constantin JM; Payen JF; Martin C; Albanese J; Malledant Y; Pottecher J; Lefrant JY; Jaber S; Joannes-Boyau O; Orban C; Ostermann M; McKenzie C; Berry W; Smith J; Lei K; Rubulotta F; Gordon A; Brett S; Stotz M; Templeton M; Rhodes A; Ebm C; Moran C; Kaukonen KM; Pettilä V; Dimopoulos G; Koulenti D; Xristodoulou A; Theodorou V; Kouliatsis G; Sertaridou E; Anthopoulos G; Choutas G; Rantis T; Karatzas S; Balla M; Papanikolaou M; Myrianthefs P; Gavala A; Fildisis G; Koutsoukou A; Kyriakopoulou M; Petrochilou K; Kompoti M; Michalia M; Clouva-Molyvdas FM; Gkiokas G; Nikolakopoulos F; Psychogiou V; Malliotakis P; Akoumianaki E; Lilitsis E; Koulouras V; Nakos G; Kalogirou M; Komnos A; Zafeiridis T; Chaintoutis C; Arvaniti K; Matamis D; Chaintoutis C; Kydona C; Gritsi-Gerogianni N; Giasnetsova T; Giannakou M; Soultati I; Chytas I; Antoniadou E; Antipa E; Lathyris D; Koukoubani T; Paraforou T; Spiropoulou K; Bekos V; Spring A; Kalatzi T; Nikolaou H; Laskou M; Strouvalis I; Aloizos S; Kapogiannis S; Soldatou O; Bassetti M; Adembri C; Villa G; Giarratano A; Raineri SM; Cortegiani A; Montalto F; Strano MT; Ranieri VM; Sandroni C; De Pascale G; Molin A; Pelosi P; Montagnani L; Urbino R; Mastromauro I; DeRosa FG; Ranieri VM; Cardoso T; Afonso S; Gonçalves-Pereira J; Baptista JP; Akova M; Özveren A
- Publication year: 2014
- Type: Articolo in rivista (Articolo in rivista)
- OA Link: http://hdl.handle.net/10447/96407
Abstract
The aims of this study were to describe the variability in protein binding of teicoplanin in critically ill patients as well as the number of patients achieving therapeutic target concentrations. This report is part of the multinational pharmacokinetic DALI Study. Patients were sampled on a single day, with blood samples taken both at the midpoint and the end of the dosing interval. Total and unbound teicoplanin concentrations were assayed using validated chromatographic methods. The lower therapeutic range of teicoplanin was defined as total trough concentrations from 10 to 20 mg/L and the higher range as 10–30mg/L. Thirteen critically ill patients were available for analysis. The following are the median (interquartile range) total and free concentrations (mg/L): midpoint, total 13.6 (11.2–26.0) and free 1.5 (0.7–2.5); trough, total 11.9 (10.2–22.7) and free 1.8 (0.6–2.6). The percentage free teicoplanin for the mid-dose and trough time points was 6.9% (4.5–15.6%) and 8.2% (5.5–16.4%), respectively. The correlation between total and free antibiotic concentrations was moderate for both the midpoint ( = 0.79, P = 0.0021) and trough (= 0.63, P = 0.027). Only 42% and 58% of patients were in the lower and higher therapeutic ranges, respectively. In conclusion, use of standard dosing for teicoplanin leads to inappropriate concen- trations in a high proportion of critically ill patients. Variability in teicoplanin protein binding is very high, placing significant doubt on the validity of total concentrations for therapeutic drug monitoring in critically ill patients.