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Antibiogram Beta-Lactams

2003

Gram Negative       Beta Lactams

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% Susceptible

Antibiotic Generic Name Acinetobacter sp (78) Citrobacter diversus (57) Citrobacter freundii (68) Enterobacter aerogenes (82) Enterobacter cloacae(147) Escherichia coli (2318) 

klebsiella pneumoniae (532)

Proteus mirabilis (379) Pseudomonas aeruginosa (440)  Serratia marcescens  (96) Relative Cost per day
Amoxicillin (PO)  *                    

<$10

Ampicillin (IV)  *

 0

 0

4

0

4

 60

 0

 91

 

 1

<$10

Amoxicillin/Clavulanate  *

 65

 97

 2

0

 5

 82

 95

 98

 

0

$10-$20

Oxacillin (IV) 

                   

$10-$20

Penicillin G Potassium (IV)* $30-$40
Ampicillin/Sulbactam (IV) $40-$50
Aztreonam (IV)                 

  73

 

>$50

Piperacillin/Tazobactam (IV)  *

  81

  93

  74

  79

  79

  94

  93

 95

 

  93

>$50

Imipenem/Cilastatin  *

  100

  100

  100

  100

  100

  100

  100

100

  82

  100

 >$50

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Legend

*  Denotes activity against anaerobes.  Anaerobes are not tested for susceptibility profiles at WakeMed.

    Grey Square: Should not be considered for use.

 


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