Table 4

Antimicrobial susceptibilities of Gram-negative microorganisms isolated from infections in ICU.

Percentage (%) of isolates resistant to antimicrobial by broth microdilution

Antimicrobial

P. aeruginosa n = 157

A. baumannii n = 74

Enterobacter spp n = 32

K. pneumoniae n = 25

E. coli n = 38

Amikacin

29.9%

71.6%

59.4%

16%

18.4%

Azteronam

77.1%

94.6%

81.2%

88%

86.8%

Piperacillin

69.4%

100%

71.8%

76%

68.4%

Ticarcillin

93%

93.2%

81.2%

64%

68.4%

Ceftriaxone

98.1%

100%

59.4%

84%

84.2%

Cefotaxime

96.2%

100%

59.4%

84%

84.2%

Ceftazidime

71.3%

100%

75%

88%

86.8%

Ciprofloxacin

59.2%

56.7%

0%

20%

39.5%

Imipenem

26.1%

63.5%

0%

12%

13.1%

Cefoperazone

93%

100%

62.5%

72%

86.8%

Gentamicin

48.4%

85.1%

81.2%

80%

78.9%

Bayram and Balci BMC Infectious Diseases 2006 6:155   doi:10.1186/1471-2334-6-155