Table 2.: Activity of Different Ampicillin Concentrations Against Five Isolates Enterococcus faecalis Highly Resistant to Aminoglycosides

Ampicillin Concentrations (mg/l)
Strain Ampicillin MIC (mg/l) Ampicillin MBC (mg/l) 0.5 1 2 4 8 16 32
2557 4 16 >2 >2 >2 -0.3 -2.3 -4.0 -4.0
2648 4 8 >2 >2 >2 -1.5 -3.0 -3.2 -3.8
2927 2 32 >2 >2 -4.0 -3.9 -2.9 -2.4 -3.4
2929 1 4 >2 -1.9 -1.9 -3.8 -3.8 -3.8 -3.8
2980 2 >32 >2 >2 -3.0 -3.2 -2.6 -2.6 -2.6

Values are change in log 10CFU/ml