An organism described as oxidase-positive, (K/NC) on TSI media, growth at 42°C, and produces a bright bluish-green pigment on Mueller-Hinton agar is most likely:
a. P. aeruginosa.
b. Pseudomonas fluorescens
c. B. cepacia
d. B. mallei.
A
P. aeruginosa, one of the most common gram-negative species encountered in the clinical setting, can be identified conveniently and reliably by the oxidase test, TSI slant, testing for growth at 42°C, and observation of a bright bluish-green, red, or brown diffusible pigment.
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