Module Seven Pre-assessment

Question 1

Nonfermenting Gram-negative rods such as Pseudomonas spp., Acinetobacter spp., or Strenophomonas spp., share the characteristics of being oxidase-negative, similar to Enterobacterales.

True or False?

Answer 1

False

Pseudomonas spp., Acinetobacter spp., and Strenotrophomonas spp., are all oxidase-positive. This is important to help differentiate them from the Gram-negative rods of Enterobacterales.

Question 2

Aeromonas spp., are curved Gram-negative rods that can be spiral, S-shaped, or seagull wing-shaped.

True or False?

Answer 2

False

Aeromonas spp., can appear as straight or curved Gram-negative rods, however, Campylobacter are often described as curved Gram-negative rods that can be spiral, S-shaped or seagull wing-shaped.

Question 3

Pseudomonas aeruginosa thrives in moist environments. The organism can be responsible for “Hot Tub” syndrome.

True or False?

Answer 3

True

Pseudomonas aeruginosa is often found in moist environments such as pools, hot tubs, and humidifiers in the hospital setting. Pseudomonas aeruginoas is a common cause of nosocomial respiratory tract infections.

Question 4

Helicobacter pylori can be recovered from a gastric biopsy. It can be presumptively identified if it tests positive for urease production

True or False?

Answer 4

True

Heliobacter pylori is a common cause of gastric infections and has been associated with gastric cancer. It produces urease which is helpful to identify the organism.

Question 5

Burkholderia cepacia is a pathogen that is commonly associated with causing pneumonia in cystic fibrosis patients.

True or False?

Answer 5

True

This organism can also be responsible fro endocarditis, UTI’s, osteomyelitis, dermatitis, and wound infections. The organism can be present in contaminated water and has been isolated from IV fluids, nebulizers, etc. in the clinical care setting.