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Table 3 Comparison of AST results for Gram-negatives: agreement of the new rapid procedure with standard method

From: Identification by mass spectrometry and automated susceptibility testing from positive bottles: a simple, rapid, and standardized approach to reduce the turnaround time in the management of blood cultures

Antimicrobial agent

No. of test

Susceptibilities

EA

CA

mE

ME

VME

S

I

R

No.

%

No.

%

No.

%

No.

%

No.

%

Amikacin

93

81

7

5

93

100

92

99

1

1.1

0

0.0

0

0.0

Amoxicillin-clavulanate

92

61

0

31

91

99

89

97

0

0.0

3

4.9

0

0.0

Cefepime

93

72

7

14

89

96

90

97

3

3.3

0

0.0

0

0.0

Cefotaxime

93

64

0

29

90

97

93

100

0

0.0

0

0.0

0

0.0

Ceftazidime

93

68

6

19

90

97

91

98

2

2.2

0

0.0

0

0.0

Ciprofloxacin

93

68

0

25

93

100

93

100

0

0.0

0

0.0

0

0.0

Colistin

89

85

0

4

87

98

89

100

0

0.0

0

0.0

0

0.0

Gentamicin

93

84

0

9

93

100

93

100

0

0.0

0

0.0

0

0.0

Ertapenem

93

79

1

13

93

100

93

100

0

0.0

0

0.0

0

0.0

Imipenem

89

86

0

3

89

100

89

100

0

0.0

0

0.0

0

0.0

Meropenem

93

90

1

2

93

100

93

100

0

0.0

0

0.0

0

0.0

Piperacillin-tazobactam

92

79

3

10

88

96

88

96

3

3.3

1

1.3

0

0.0

Tigecycline

84

79

2

3

83

99

81

96

3

3.6

0

0.0

0

0.0

Co-trimoxazole

93

65

0

28

91

98

92

99

0

0.0

1

1.5

0

0.0

TOTAL

1283

1061

27

195

1263

98.4

1266

98.7

12

0.9

5

0.5

0

0