Journal Article


David L. Paterson and Daryl D. DePestel

in Clinical Infectious Diseases

Published on behalf of Infectious Diseases Society of America

Volume 49, issue 2, pages 291-298
Published in print July 2009 | ISSN: 1058-4838
Published online July 2009 | e-ISSN: 1537-6591 | DOI:

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Carbapenems play a significant role in the current antibiotic armamentarium. Doripenem is the newest carbapenem to be commercially released. Its antimicrobial spectrum more closely resembles those of meropenem and imipenem than that of ertapenem. Thus, it has significant in vitro activity against streptococci, methicillin-susceptible staphylococci, Enterobacteriaceae (including extended-spectrum β-lactamase-producing strains), Pseudomonas aeruginosa, Acinetobacter species, and Bacteroides fragilis. Doripenem does not have clinically useful activity against methicillin-resistant Staphylococcus aureus, vancomycin-resistant enterococci, and the majority of gram-negative bacilli that are resistant to meropenem or imipenem. In vitro, resistant P. aeruginosa mutants appear to be harder to select with doripenem than with other carbapenems. Doripenem has been approved for use in treatment of complicated intra-abdominal infection and complicated urinary tract infection. Studies of hospital-acquired pneumonia have also been completed, including one that used a 4-h infusion to enhance the pharmacodynamic profile. In vitro, doripenem lacks the propensity to cause seizures, and a low risk of seizures has been demonstrated in clinical studies. Currently unanswered questions regarding doripenem include the utility and dosing in neonatal, pediatric, and cystic fibrosis populations and specific dosage recommendations for patients receiving hemodialysis, peritoneal dialysis, or continuous renal replacement therapies. The longevity of doripenem will depend on our ability to curtail the spread of carbapenem-resistant organisms, which are already a significant problem at some institutions.

Journal Article.  4959 words.  Illustrated.

Subjects: Infectious Diseases ; Immunology ; Public Health and Epidemiology ; Microbiology

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