Table 3 Antimicrobial susceptibility profile of 95 isolates of A. baumannii, and MIC reductions of the antibiotics in exposure to PAβN

Imipenem^a

2 (2)

6 (6)

87 (92)

0.38–32/0.38–32

32/32

32/32

1 (1)/1 (1)

0/0

94 (99)/94 (99)

Meropenem

1 (1)

0

94 (99)

–

–

–

–

–

–

Doripenem

0

1 (1)

94 (99)

–

–

–

–

–

–

Cefotaxime

0

1 (1)

94 (99)

–

–

–

–

–

–

Ceftazidime

1 (1)

0

94 (99)

–

–

–

–

–

–

Cefepime^a

1 (1)

7 (7)

87 (92)

3–256/3–256

256/96

256/256

1 (1)/1 (1)

0/0

94 (99)/94 (99)

Ampicillin-Sulbactam

12 (13)

22 (23)

61 (64)

–

–

–

–

–

–

Ticarcillin-clavulanic

1 (1)

0

94 (99)

–

–

–

–

–

–

Piperacillin-Tazobactam

0

0

95 (100)

–

–

–

–

–

–

Gentamicin^a

5 (5)

16 (17)

74 (78)

0.75–256/0.38–256

96/32

256/256

4 (4)/4 (4)

6 (6)/14 (15)

85 (90)/77 (81)

Amikacin

11 (12)

7 (7)

77 (81)

–

–

–

–

–

–

Tobramycin

46 (48)

2 (2)

47 (50)

–

–

–

–

–

–

Tetracycline

6 (6)

22 (23)

67 (71)

–

–

–

–

–

–

Minocycline

76 (80)

12 (13)

7 (7)

–

–

–

–

–

–

Tigecycline^a

–

–

–

0.016–16/0.016–12

4/2

12/6

25 (26)/58 (61)

31 (33)/20 (21)

39 (41)/17 (18)

Cotrimoxazole

1 (1)

0

94 (99)

–

–

–

–

–

–

Levofloxacin^a

1 (1)

0

94 (99)

0.064–32/0.064–32

32/12

32/32

2 (2)/2 (2)

13 (14)/13 (14)

80 (84)/80 (84)

Ciprofloxacin

1 (1)

1 (1)

93 (98)

–

–

–

–

–

–

Gatifloxacin

2 (2)

0

93 (98)

–

–

–

–

–

–

Colistin^b

–

–

–

0.047–1.0

0.75

1.0

–

–

–