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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