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Table 3 Antimicrobial resistance of the A. baumannii isolates resistant and susceptible to carbapenems

From: The first nationwide multicenter study of Acinetobacter baumannii recovered in Serbia: emergence of OXA-72, OXA-23 and NDM-1-producing isolates

Antimicrobial agent

Overall resistance (n = 237) No. (%)

Carbapenem-resistant A. baumannii

(n = 222) No. (%)

Carbapenem-susceptibileA. baumannii

(n = 15) No. (%)

P value

Ampicillin-sulbactam

140 (59.1%)

136 (61.3)

4 (26.7)

P = 0.008

Piperacillin-tazobactam

233 (98.3%)

222 (100)

11 (73.3)

P < 0.001

Ceftazidime

233 (98.3%)

222 (100)

11 (73.3)

P < 0.001

Cefepime

233 (98.3%)

222 (100)

11 (73.3)

P < 0.001

Imipenem

219 (92.4%)

219 (98.6)

0 (0)

P < 0.001

Meropenem

222 (93.7%)

222 (100)

0 (0)

P < 0.001

Amikacin

217 (91.6%)

209 (94.1)

8 (53.3)

P < 0.001

Gentamicin

220 (92.8%)

210 (94.6)

10 (66.7)

P < 0.001

Tobramycin

163 (68.8%)

159 (71.6)

4 (26.7)

P = 0.000

Ciprofloxacin

231 (97.5%)

221 (99.5)

10 (66.7)

P < 0.001

Levofloxacin

226 (95.4%)

217 (97.7)

9 (60)

P < 0.001

Trimethoprim-sulfamethoxazole

209 (88.2%)

202 (91)

6 (40)

P < 0.001

Tetracycline

222 (93.7%)

214 (96.4)

8 (53.3)

P < 0.001

Tigecycline

59 (24.9%)

58 (26.1)

1 (6.7)

P = 0.092

Colistin

10 (4.3%)

10 (4.5)

0 (0)

P = 0.401