PMID- 15951473 OWN - NLM STAT- MEDLINE DCOM- 20051103 LR - 20181201 IS - 0091-2700 (Print) IS - 0091-2700 (Linking) VI - 45 IP - 7 DP - 2005 Jul TI - An evaluation of an optimal sampling strategy for meropenem in febrile neutropenics. PG - 832-5 AB - Optimal sampling design with nonparametric population modeling offers the opportunity to determine pharmacokinetic parameters for patients in whom blood sampling is restricted. This approach was compared to a standard individualized modeling method for meropenem pharmacokinetics in febrile neutropenic patients. The population modeling program, nonparametric approach of expectation maximization (NPEM), with a full data set was compared to a sparse data set selected by D-optimal sampling design. The authors demonstrated that the D-optimal sampling strategy, when applied to this clinical population, provided good pharmacokinetic parameter estimates along with their variability. Four individualized and optimally selected sampling time points provided the same parameter estimates as more intensive sampling regimens using traditional and population modeling techniques. The different modeling methods were considerably consistent, except for the estimation of CL(d) with sparse sampling. The findings suggest that D-optimal sparse sampling is a reasonable approach to population pharmacokinetic/pharmacodynamic studies during drug development when limited sampling is necessary. FAU - Ariano, Robert E AU - Ariano RE AD - Department of Pharmacy, St. Boniface General Hospital, Winnipeg, Manitoba, Canada. FAU - Zelenitsky, Sheryl A AU - Zelenitsky SA FAU - Nyhlen, Anna AU - Nyhlen A FAU - Sitar, Daniel S AU - Sitar DS LA - eng PT - Clinical Trial PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - J Clin Pharmacol JT - Journal of clinical pharmacology JID - 0366372 RN - 0 (Anti-Bacterial Agents) RN - 0 (Thienamycins) RN - AYI8EX34EU (Creatinine) RN - FV9J3JU8B1 (Meropenem) SB - IM MH - Anti-Bacterial Agents/*pharmacokinetics MH - Creatinine/metabolism MH - Female MH - Fever/metabolism MH - Humans MH - Male MH - Meropenem MH - Metabolic Clearance Rate MH - Middle Aged MH - *Models, Biological MH - Neutropenia/*metabolism MH - Research Design MH - Thienamycins/*pharmacokinetics EDAT- 2005/06/14 09:00 MHDA- 2005/11/04 09:00 CRDT- 2005/06/14 09:00 PHST- 2005/06/14 09:00 [pubmed] PHST- 2005/11/04 09:00 [medline] PHST- 2005/06/14 09:00 [entrez] AID - 45/7/832 [pii] AID - 10.1177/0091270005277937 [doi] PST - ppublish SO - J Clin Pharmacol. 2005 Jul;45(7):832-5. doi: 10.1177/0091270005277937.