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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