The passage of piperacillin into the omentum was evaluated in 23 patients who received one single intravenous injection of 2 grams. Median concentrations were 7.05 micrograms.g-1 at 30 min, 7.2 micrograms.g-1 at 60 min., 4.65 micrograms.g-1 at 90 min. and 3.53 micrograms.g-1 at 120 min. The corresponding maximal values were 36 micrograms.g-1, 59.7 micrograms.g-1, 36 micrograms.g-1 and 32 micrograms.g-1 respectively. Specimens collected beyond 2 hours showed that the concentrations obtained were maintained.
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