|
Method
|
BMD
|
Vitek 2®a
|
Rapid PolymyxinTM NPb
|
UMIC
|
Colistin E-test MIC strip
|
|---|
|
Species
|
S/R
|
S/R
|
% concordance
|
S/R
|
% concordance
|
S/R
|
% concordance
|
S/R
|
% concordance
|
|---|
|
Acinetobacter spp.
|
6/1
|
4/0
|
100
|
1/1
|
50
|
6/1
|
100
|
6/1
|
100
|
|
C. koseri
|
3/0
|
3/0
|
100
|
3/0
|
100
|
3/0
|
100
|
3/0
|
100
|
|
K. aerogenes
|
1/1
|
1/1
|
100
|
1/1
|
100
|
1/1
|
100
|
1/1
|
100
|
|
E. cloacae
|
2/3
|
3/2
|
80
|
2/3
|
100
|
2/3
|
100
|
3/2
|
80
|
|
E. coli
|
13/11
|
13/11
|
100
|
13/11
|
100
|
13/11
|
100
|
13/11
|
100
|
|
Hafnia spp.
|
0/15
|
1/14
|
93.3
|
0/15
|
100
|
0/15
|
100
|
0/15
|
100
|
|
K. oxytoca
|
1/2
|
1/2
|
100
|
1/2
|
100
|
1/2
|
100
|
1/2
|
100
|
|
K. pneumoniae
|
8/12
|
9/10
|
94.7
|
9/11
|
95
|
9/11
|
95
|
9/11
|
95
|
|
M. morganii
|
0/3
|
0/3
|
100
|
0/3
|
100
|
0/3
|
100
|
0/3
|
100
|
|
P. mirabilis
|
0/2
|
0/2
|
100
|
0/2
|
100
|
0/2
|
100
|
0/2
|
100
|
|
P. vulgaris
|
0/1
|
0/1
|
100
|
0/1
|
100
|
0/1
|
100
|
0/1
|
100
|
|
P. aeruginosa
|
9/1
|
8/0
|
87.5
|
NA
|
NA
|
10/0
|
90
|
10/0
|
90
|
|
S. marcescens
|
0/2
|
0/2
|
100
|
0/2
|
100
|
0/2
|
100
|
0/2
|
100
|
|
Total
|
43/54
|
43/48
|
95.6
|
30/52
|
98.8
|
45/52
|
97.9
|
46/51
|
96.9
|
- BMD Broth microdilution, S Susceptible, R Resistant, NA Not applicable
- aA total of 91 isolates were tested by Vitek 2® method. Isolates not tested by Vitek 2® test was due to low growth, but were excluded from the comparison analysis with BMD
- bA total of 82 were tested by the Rapid PolymyxinTM NP method. Isolates not tested by Rapid PolymyxinTM NP test were excluded from the comparison analysis with gold standard
