Integrating Bacterial Identification and Susceptibility Testing: A Simple and Rapid Approach to Reduce the Turnaround Time in the Management of Blood Cultures
Table 1
Identification performance of rapid bacterial identification (rID) versus the standard bacterial identification method (sID).
Organism ID by the current standard method
N (%) identified in Vitek MS (rID)
Concordance level
n
Species
Genus
No. Id
Overall
524
459 (87.3)
466 (88.6)
58 (11)
Gram-negative bacteria
246
235 (96)
235 (96)
11 (4)
K. pneumoniae
100
96 (96)
96 (96)
4 (4)
E. coli
67
66 (99)
66 (99)
1 (4)
K. oxytoca
15
13 (87)
13 (87)
2 (13)
E. cloacae
6
6 (100)
6 (100)
0
P. mirabilis
5
5 (100)
5 (100)
0
E. hormaechei
4
4 (100)
4 (100)
0
S. marcescens
3
3 (100)
3 (100)
0
C. koseri
2
1 (50)
1 (50)
1 (50)
M. morganii
1
1 (100)
1 (100)
0
P. aeruginosa
22
22 (100)
22 (100)
0
A. baumannii
14
13 (93)
13 (93)
1 (7)
B. cepacia
4
3 (75)
3 (75)
1 (25)
S. maltophilia
3
3 (100)
3 (100)
0
Gram-positive bacteria
Staphylococci
278
224 (81)
231 (83)
47 (17)
S. aureus
73
72 (99)
72 (99)
1 (1)
Coagulase-negative staphylococci
205
153 (75)
160 (78)
45 (22)
Concordance rate for species level and genus level and nonreliable identification by Vitek MS system.
