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Bulletin of the National Research Centre

Table 2 Antibiotic resistance profile of carbapenem-resistant versus carbapenem susceptible P. aeruginosa isolates

From: Phenotypic characterization of the Egyptian isolates “extensively drug-resistant Pseudomonas aeruginosa” and detection of their metallo-β-lactamases encoding genes

Antibiotics

P. aeruginosa resistance

Carbapenem resistant

(n = 59)a

Carbapenem susceptible

(n = 41)

P value

n

%

N

%

Ciprofloxacin*

56

94.9

8

19.5

<0.05

Levofloxacin*

59

100

8

19.5

<0.05

Aztreonam

16

27.1

7

17.07

0.484213

Gentamicin*

56

94.9

14

34.1

<0.05

Amikacin*

54

91.5

12

29.2

<0.05

Ceftazidime*

49

83.08

4

9.7

<0.05

Cefepime*

59

100

15

36.5

<0.05

Piperacillin*

55

93.2

9

21.9

<0.05

Piperacillin/tazobactam*

50

84.7

5

12.1

<0.05

Imipenem

59

100

0

–

–

Meropenem

57

96.6b

0

–

–

Polymyxin B

0

 

0

–

–

Colistin

0

 

0

–

–

  1. aThe percentages of non-susceptible isolates shown include isolates in the intermediate and resistant CLSI categories. b The remaining 3.4% of isolates were meropenem susceptible. *The discrepancy in the resistance percentage among carbapenem-resistant and carbapenem susceptible is significant at p less than 0.05
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