Piperacillin combined with tazobactam was tested at both a fixed ratio (8: 1) and fixed
tazobactam concentration (4 µg/ml) against 2,685 consecutively isolated gram-negative …

Piperacillin combined with tazobactam at a fixed concentration (4 μg/ml) and a ratio (8: 1)
was tested against 5029 aerobic isolates and 447 fastidious organisms, including …

The in vitro activity of piperacillin alone or titrated with a constant concentration of 4 μg/ml
tazobactam was evaluated against 3962 baseline pathogens isolated from 1899 patients …

The ability of various in vitro β-lactam susceptibility test results to predict the susceptibility of
piperacillin-tazobactam (a new β-lactam-β-lactamase inhibitor combination) was assessed …

The combination of piperacillin and the beta-lactamase inhibitor tazobactam (formerly YTR
830) was studied to determine optimal disk concentrations and dilution testing conditions. In …

In this Dutch national survey piperacillin-tazobactam had a MIC90of≤ 8 mg/L for
Enterobacteriaceae (Enterobacter cloacae excluded) and Pseudomonas aeruginosa, 64 …

Abstract Twenty-nine British and Irish hospitals each collected up to 300 bacterial isolates
from in-patients. The organisms were identified by an appropriate API system or, for …

The experience with analyzing the potency of piperacillin/tazobactam generic formulations
by a precise multiorganism in vitro assay was expanded to 46 lots (29 manufacturers, 17 …

The in-vitro activities of piperacillin plus tazobactam at ratios of 4: 1, 8: 1 and 16: 1 were
determined against 952 non-copy clinical aerobic bacterial isolates collected from 20 UK …

The comparative activities of piperacillin/tazobactam and other antibiotics against 5625
Gram-negative and Gram-positive bactena freshly isolated from hospitalized patients was …