Bactericidal activity, post antibiotic effect and modified controlled effective regrowth time of meropenem at high concentrations.

The effect of increasing meropenem concentrations up to 250 mg/L, as might occur if 3 g was given as a single daily intravenous dose, was investigated in terms of bactericidal activity, post antibiotic effect (PAE) and modified controlled effective regrowth time (mCERT). Increasing the meropenem concentration above 50 mg/L did not result in increased bacterial killing, while concentrations over 75 mg/L did not result in longer PAE or mCERT.