PipEracillin Tazobactam Versus mERoPENem for Treatment of Bloodstream Infections Caused by Cephalosporin-resistant Enterobacteriaceae (PETERPEN)

Data regarding optimal treatment for extended-spectrum beta-lactamase (ESBL) producing Enterobacteriaceae blood-stream infection are lacking. Observational studies show conflicting results when comparing treatment with combination beta-lactam-beta-lactamase inhibitor and carbapenems. The investigators aim to evaluate the effect of definitive treatment with meropenem vs. piperacillin-tazobactam on the outcome of patients with bacteremia due to cephalosporin-non-susceptible Enterobacteriaceae. The investigators hypothesize that piperacillin-tazobactam is non-inferior to meropenem.

NCT Number	NCT03671967
Lead Sponsor	Rambam Health Care Campus Collaborators: Rabin Medical Center, University of Modena and Reggio Emilia, Tel Aviv Medical Center, Meir Medical Center, Soroka University Medical Center, The Chaim Sheba Medical Center, McGill University Health Centre/Research Institute of the McGill University Health Centre, Jewish General Hospital, Canadian Institutes of Health Research (CIHR), Hadassah Medical Organization
Conditions	Beta Lactam Resistant Bacterial Infection, Enterobacteriaceae Infections, Bacteremia
Enrollment	1,084 participants
Start Date	2019-05-01
Primary Completion	2027-01-01 (estimated)
Study Completion	2027-04-01 (estimated)
Updated on ClinicalTrials.gov	2025-08-01