Ann Clin Microbiol 2023;26:147-157. Analysis of blood culture data at a university hospital: bacterial distribution and cumulative antimicrobial resistance (2016–2020)
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Table 4. Antimicrobial resistance rates of E. coli and K. pneumoniae blood isolates during 2016-2020
% Resistant
20162017201820192020Total
E. coli (n = 410)(n = 458)(n = 452)(n = 513)(n = 542)(n = 2,375)
Ampicillin68.7 70.7 68.7 70.6 68.9 69.6
AMC9.4 10.4 12.4 12.7 12.6 11.6
Cefotaxime33.3 32.4 34.6 37.6 36.5 35.0
Ceftazidime14.8 14.5 18.0 19.5 18.3 17.2
Cefepime11.8 10.1 14.9 15.0 12.8 13.0
Aztreonam20.7 21.1 24.8 26.5 25.7 24.0
Ertapenem0.5 0.41.1 1.2 0.6 0.7
Imipenem0.2 0 0.9 0.8 0.6 0.5
Ciprofloxacin* 36.9 45.2 48.6 48.7 52.1 46.8
Gentamicin30.5 29.5 25.7 28.3 26.6 28.0
SXT35.7 37.0 40.4 36.3 39.7 37.9
K. pneumoniae (n = 152)(n = 159)(n = 195)(n = 173)(n = 209)(n = 888)
Ampicillin80.4 79.5 83.9 88.4 85.2 83.7
AMC12.2 15.9 16.6 20.8 17.2 16.7
Cefotaxime26.4 29.1 30.1 30.1 31.1 29.5
Ceftazidime18.9 23.8 22.8 24.3 21.5 22.3
Cefepime9.5 15.2 15.5 16.8 17.7 15.2
Aztreonam24.3 25.8 29.0 26.0 29.2 27.1
Ertapenem2.0 5.3 5.2 6.9 6.7 5.4
Imipenem1.4 4.6 4.7 4.6 4.8 4.1
Ciprofloxacin25.7 33.1 31.6 32.9 34.0 31.7
Gentamicin18.2 17.9 15.5 15.0 16.7 16.6
SXT20.3 25.8 25.4 24.3 25.4 24.4

*P < 0.001.