Exam 20: Acinetobacter, Stenotrophomonas, and Other Organisms

The natural habitat of Acinetobacter sp.can best be described as the:

Which organism is often isolated in the sputum of patients with cystic fibrosis?

A bronchoscopy was performed on a patient who later developed a nosocomial infection as a result of the procedure.The organism recovered from his lung was a nonlactose fermenter that oxidized glucose and maltose, was lysine decarboxylase-positive, and was motile.The organism is most likely which one of the following?

Which organism may be mistaken for a lactose fermenter on MacConkey agar because of colonies exhibiting a purple hue on the media?

Differentiation of Stenotrophomonas maltophilia and Burkholderia cepacia is best accomplished by:

The primary drug of choice for infections caused by Stenotrophomonas maltophilia is:

Plump coccobacilli that tend to resist alcohol decolorization and may be mistaken for Neisseria spp.are:

Of the following species, which are widely distributed in nature and hospital environments?

For more serious infections caused by Acinetobacter spp., such as pneumonia or bacteremia, effective treatment may require the use of:

Which organism is oxidase-negative, oxidizes glucose, and is a nonlactose fermenter?