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Table 1 Antimicrobial resistance patterns of Gram negative bacteria isolated in CSOM patients at the University of Gondar Comprehensive Specialized Hospital, January–May 2017

From: Bacterial profile and antimicrobial susceptibility patterns in chronic suppurative otitis media at the University of Gondar Comprehensive Specialized Hospital, Northwest Ethiopia

Isolates

Antimicrobial resistance pattern

CFP

n (%)

COT

n (%)

CXM

n (%)

NOR

n (%)

CAF

n (%)

CIP

n (%)

NAL

n (%)

AMP

n (%)

GEN

n (%)

TE

n (%)

AMO/C

n (%)

CFR

n (%)

P. mirabilis (n = 16)

 R

7 (43.7)

8 (50)

2 (12.5)

0

6 (37.5)

0

3 (18.7)

13 (81.2)

2 (12.5)

9 (56.3)

5 (31.3)

5 (31.3)

Providencia spp. (n = 11)

 R

9 (81.8)

9 (81.8)

11 (100)

0

8 (72.7)

0

8 (72.7)

9 (81.8)

3 (27.3)

7 (63.7)

10 (90.9)

10 (90.9)

Klebsiella spp. (n = 10)

 R

5 (50)

4 (40)

2 (20)

0

1 (10)

0

1 (10)

9 (90)

1 (10)

1 (10)

6 (60)

5 (50)

Citrobacter spp. (n = 5)

 R

1 (20)

0

2 (40)

1 (20)

1 (20)

1 (20)

0

5 (100)

0

1 (20)

0

5 (100)

Enterobacter spp. (n = 4)

 R

2 (50)

0

2 (50)

0

0

0

0

100

0

0

0

4 (100)

Pseudomonas spp. (n = 2)

 R

2 (100)

2 (100)

2 (100)

0

1 (50)

0

0

0

1 (50)

2 (100)

2 (100)

2 (100)

P. vulgaris (n = 2)

 R

1 (50)

2 (100)

0

1 (50)

1 (50)

2 (100)

2 (100)

1 (50)

1 (50)

2 (100)

2 (100)

1 (50)

  1. CFP cefepime, COT cotrimoxazol, CXM cefixime, NOR norfloxacin, GEN gentamicin, AMO/C amoxicillin–clavulanic acid, CAF chloramphenicol, CIP ciprofloxacin, TE tetracyclin, CFR cefuroxime, NA nalidixic acid, AMP ampicillin, R resistance
  2. Tobramycin and piperacillin were replaced ampicillin and nalidixic acid respectively in case of P. aeruginosa