The Journal of antimicrobial chemotherapy
-
J. Antimicrob. Chemother. · Jun 2004
ReviewPharmacokinetics and pharmacodynamics of ertapenem: an overview for clinicians.
Ertapenem, a Group 1 carbapenem, is a once-a-day parenteral beta-lactam antibiotic recently licensed in the USA and Europe. Monotherapy with ertapenem dosed as 1 g once a day has been shown to be highly effective in clinical trials for the treatment of complicated infections of skin and skin structures, complicated intra-abdominal infections, community-acquired pneumonia, acute pelvic infections and complicated urinary tract infections. ⋯ Dose reductions are indicated for patients with advanced renal insufficiency. Ertapenem is neither a substrate nor an inhibitor of P-glycoprotein or cytochrome P450 enzymes; significant drug interactions between ertapenem and drugs handled by these systems are not expected.
-
J. Antimicrob. Chemother. · Jun 2004
ReviewIn vitro activity of ertapenem: review of recent studies.
Ertapenem is a long-acting, 1beta-methyl parenteral Group 1 carbapenem antibiotic that has a broad antibacterial spectrum and once-a-day dosing supported by clinical studies. Ertapenem is active against both Gram-positive and Gram-negative bacteria, including Enterobacteriaceae, Streptococcus pneumoniae and most species of anaerobic bacteria. Isolates from a variety of infections (intra-abdominal infections, skin/soft-tissue infections, community-acquired pneumonia, pelvic infections and urinary tract infections) are inhibited by ertapenem. ⋯ Ertapenem was equivalent to or better than piperacillin-tazobactam in activity against most anaerobic species isolated from these infections, and was more potent than piperacillin-tazobactam and ceftriaxone against the most common skin pathogens (e.g. methicillin-susceptible Staphylococcus aureus). Ertapenem was highly active against most of the pathogens isolated from patients with community-acquired pneumonia, except for isolates of methicillin-resistant S. aureus (which are infrequent causes of community-acquired infection); these isolates were also resistant to ceftriaxone. Resistance to ertapenem is most commonly attributable to a variety of mechanisms including alterations in penicillin-binding proteins in Gram-positive organisms, and combinations of potent metallo-beta-lactamase enzymes, porin protein defects and efflux pumps in Gram-negative organisms.
-
J. Antimicrob. Chemother. · Jun 2004
Intra-abdominal infections: review of the bacteriology, antimicrobial susceptibility and the role of ertapenem in their therapy.
Complicated intra-abdominal infections require a combination of surgery/drainage and antimicrobial therapy that is active against both the aerobic and the anaerobic bacteria that comprise the intestinal flora. Ertapenem, a parenteral carbapenem, is highly resistant to a wide variety of beta-lactamase enzymes, and has a broad spectrum of activity against bacteria associated with community-acquired infections including those of complicated intra-abdominal conditions. This article reviews the bacteriology of complicated intra-abdominal infections, their antimicrobial susceptibility, especially to anaerobes, the utility of animal models in these mixed infections, and the supportive clinical trials and in vitro susceptibility data that show ertapenem to be generally well tolerated and as effective as either piperacillin-tazobactam or ceftriaxone plus metronidazole in the therapy of complicated intra-abdominal infections.
-
J. Antimicrob. Chemother. · Jun 2004
Randomized Controlled Trial Multicenter Study Comparative Study Clinical TrialTreatment of polymicrobial infections: post hoc analysis of three trials comparing ertapenem and piperacillin-tazobactam.
The efficacy of ertapenem 1 g once a day for the treatment of polymicrobial complicated intra-abdominal, complicated skin/skin-structure and acute pelvic infections was compared with piperacillin-tazobactam 3.375 g every 6 h in a post hoc analysis of data from three large randomized double-blind trials. Of the 1,558 treated patients in the three trials, no pathogen was identified in 345 (22.1%), 423 (27.2%) had a monomicrobial infection and 790 (50.7%) had a polymicrobial infection. ⋯ Respective cure rates for all evaluable patients in the original trials were: 83.6% and 80.4% for intra-abdominal, 83.9% and 85.3% for skin/skin-structure, and 93.9% and 91.5% for pelvic infections. These data show that in the three trials, ertapenem 1 g once a day was highly effective for the treatment of polymicrobial infections and as effective as piperacillin-tazobactam 3.375 g every 6 h.