Carbapenamases in Antibiotic Reistance
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Pseudomonas aeruginosa – Columbia & Puerto Rico
The Modified Hodge Test is a phenotypic confirmatory test for “Carapnemase” activity and is indicated when there is a positive screening test and resistance to one or more agents in cephalosporin subclass III (i.e., cefoperazone, cefotaxime, ceftazidime, ceftizoxime, and ceftriaxone) Be aware that imipenem disk tests perform poorly as a screen for carbapenemases.
Lawn of E. coli ATCC 25922
1:10 dilution of a
0.5 McFarland suspension
Described by Lee et al. CMI, 7, 88-102. 2001.