Table 2.
Comparison of polymyxin B susceptibility of adapted DOT-MGA directly from positive blood cultures with BMD.
| Microorganism | Isolates (n) | Polymyxin susceptible (BMD/adapted DOT-MGA) | Polymyxin resistant (BMD/adapted DOT-MGA) | Categorical agreement |
|---|---|---|---|---|
| Enterobacterales | ||||
| Klebsiella pneumoniae | 62 | 35/35 | 27/27 | 100% |
| Enterobacter sp. | 12 | 11/11 | 1/1 | 100% |
| Escherichia coli | 4 | 4/4 | 0/0 | 100% |
| Klebsiella aerogenes | 4 | 3/3 | 1/1 | 100% |
| Klebsiella oxytoca | 3 | 3/3 | 0/0 | 100% |
| Citrobacter freundii | 2 | 2/2 | 0/0 | 100% |
| Non-fermenters | ||||
| Pseudomonas aeruginosa | 14 | 14/14 | 0/0 | 100% |
| Acinetobacter calcoaceticus-baumannii complex | 15 | 6/6 | 9/9 | 100% |
| Total | 116 | 78 | 38 | 100% |