PMID- 22573855 OWN - NLM STAT- MEDLINE DCOM- 20130211 LR - 20131121 IS - 1537-6591 (Electronic) IS - 1058-4838 (Linking) VI - 55 IP - 4 DP - 2012 Aug TI - Initial vancomycin dosing protocol to achieve therapeutic serum concentrations in patients undergoing hemodialysis. PG - 527-33 LID - 10.1093/cid/cis458 [doi] AB - BACKGROUND: Although recent consensus guidelines proposed more aggressive vancomycin troughs of >10 or 15-20 mg/L for complicated Staphylococcus aureus infections, dosing information to achieve these targets in patients undergoing hemodialysis (HD) is scarce. METHODS: We used Monte Carlo simulation (MCS) methods with a previously published population-pharmacokinetic model and relevant patient demographics to evaluate and revise our existing vancomycin dosing protocol (1000-mg load followed by 500-mg maintenance dose, with doses infused during the last hour of dialysis). A new protocol (1000-mg load followed by 500-mg maintenance dose for patients <70 kg, 1250-mg followed by 750-mg for those 70-100 kg, and 1500-mg followed by 1000-mg for those >100 kg) was developed and prospectively validated to achieve therapeutic serum troughs in patients undergoing high-flux HD. RESULTS: MCSs predicted that our existing protocol would be suboptimal in more than one-third of patients. Simulations predicted that the new vancomycin dosing protocol would achieve maintenance (pre-HD) troughs of 10-20 mg/L in 86.0% of cases including 15-20 mg/L in 35.2%. In prospective validation, the observed postload trough (pre-HD session 2) was 13.5 +/- 3.4 mg/L with 76.9% of levels (20 of 26) between 10 and 20 mg/L. The observed maintenance trough was 17.3 +/- 4.0 mg/L with 65.5% (19 of 29) between 10 and 20 mg/L and 89.7% (26 of 29) within 10% of the upper limit (ie, 10-22 mg/L). CONCLUSIONS: In this study, a practical vancomycin dosing protocol for patients undergoing HD was developed and prospectively validated to achieve therapeutic serum concentrations in the clinical setting. FAU - Zelenitsky, Sheryl A AU - Zelenitsky SA AD - Faculty of Pharmacy, University of Manitoba, Canada. s_zelenitsky@umanitoba.ca FAU - Ariano, Robert E AU - Ariano RE FAU - McCrae, Margo L AU - McCrae ML FAU - Vercaigne, Lavern M AU - Vercaigne LM LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20120509 PL - United States TA - Clin Infect Dis JT - Clinical infectious diseases : an official publication of the Infectious Diseases Society of America JID - 9203213 RN - 0 (Anti-Bacterial Agents) RN - 6Q205EH1VU (Vancomycin) SB - IM MH - Aged MH - Anti-Bacterial Agents/*administration & dosage/blood/pharmacokinetics MH - Computer Simulation MH - Drug Administration Schedule MH - Drug Monitoring/*methods MH - Humans MH - Methicillin-Resistant Staphylococcus aureus MH - Middle Aged MH - Monte Carlo Method MH - Prospective Studies MH - *Renal Dialysis MH - Reproducibility of Results MH - Staphylococcal Infections/blood/*drug therapy MH - Vancomycin/*administration & dosage/blood/pharmacokinetics EDAT- 2012/05/11 06:00 MHDA- 2013/02/12 06:00 CRDT- 2012/05/11 06:00 PHST- 2012/05/11 06:00 [entrez] PHST- 2012/05/11 06:00 [pubmed] PHST- 2013/02/12 06:00 [medline] AID - cis458 [pii] AID - 10.1093/cid/cis458 [doi] PST - ppublish SO - Clin Infect Dis. 2012 Aug;55(4):527-33. doi: 10.1093/cid/cis458. Epub 2012 May 9.