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Antimicrobial Agents and Chemotherapy, September 2007, p. 3449-3451, Vol. 51, No. 9
0066-4804/07/$08.00+0     doi:10.1128/AAC.01586-06
Copyright © 2007, American Society for Microbiology. All Rights Reserved.

Concentration-Effect Relationship of Ceftazidime Explains Why the Time above the MIC Is 40 Percent for a Static Effect In Vivo{triangledown}

Johan W. Mouton,1* Nieko Punt,2 and Alexander A. Vinks3

Department of Medical Microbiology and Infectious Diseases, Canisius Wilhelmina Hospital, Nijmegen, The Netherlands,1 Medimatics, Maastricht, The Netherlands,2 Pediatric Pharmacology Research Unit, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio3

Received 20 December 2006/ Returned for modification 26 March 2007/ Accepted 11 June 2007

Growth-kill dynamics were characterized in vitro, and the parameter estimates were used to simulate bacterial growth and kill in vivo using both mouse and human pharmacokinetics. The parameter estimates obtained in vitro predicted a time above the MIC of between 35 and 38% for a static effect in mice after 24 h of treatment.


* Corresponding author. Mailing address: Department of Medical Microbiology and Infectious Diseases, Canisius Wilhelmina Ziekenhuis Nijmegen, Weg door Jonkerbos 100, 6532 sz Nijmegen, The Netherlands. Phone: 31-(0)24-3657514. Fax: 31-(0)24-3657516. E-mail: Mouton{at}cwz.nl

{triangledown} Published ahead of print on 18 June 2007.


Antimicrobial Agents and Chemotherapy, September 2007, p. 3449-3451, Vol. 51, No. 9
0066-4804/07/$08.00+0     doi:10.1128/AAC.01586-06
Copyright © 2007, American Society for Microbiology. All Rights Reserved.




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