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Questions and Answers
What is a common environmental characteristic of Pseudomonas aeruginosa?
What is a common environmental characteristic of Pseudomonas aeruginosa?
- Common in dry areas
- Found in moist areas of hospitals (correct)
- Exists predominantly in human skin
- Primarily lives in soil
Which of the following infections is NOT associated with Pseudomonas aeruginosa?
Which of the following infections is NOT associated with Pseudomonas aeruginosa?
- Eye infection
- Skin infection
- Urinary tract infection (UTI)
- Streptococcal throat infection (correct)
Which virulent factor is associated with Pseudomonas aeruginosa's ability to resist antibiotic treatment?
Which virulent factor is associated with Pseudomonas aeruginosa's ability to resist antibiotic treatment?
- High-level biofilm formation (correct)
- Ability to ferment glucose
- Production of exotoxin B
- Low-level beta-lactamase production
Which patient population is particularly at risk for infections caused by Pseudomonas aeruginosa?
Which patient population is particularly at risk for infections caused by Pseudomonas aeruginosa?
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Which characteristic is true of Pseudomonas aeruginosa regarding its biochemical properties?
Which characteristic is true of Pseudomonas aeruginosa regarding its biochemical properties?
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Study Notes
Pseudomonas aeruginosa
- A common pathogen in humans, especially in moist hospital environments.
- Characterized by its distinct sweet grape-like odor.
- An obligate aerobe requiring oxygen for growth.
- Able to grow at 42 degrees Celsius, a temperature that inhibits many other bacteria.
- Gram-negative bacterium that resides in diverse environments like water, plants, and animals.
- Possesses a range of virulent factors including Exotoxin A, pili, and lipopolysaccharide contributing to its pathogenicity.
- Can cause various infections, including skin, eye, and ear infections.
- A significant cause of serious infections like ventilated associated pneumonia (VAP), nosocomial pneumonia, and urinary tract infections (UTIs).
- Often infects individuals with compromised immune systems, such as neutropenic patients, burn patients, cystic fibrosis (CF) patients, and those on mechanical ventilation.
- Resistant to many antibiotics due to its efficient mechanisms like beta-lactamase production, biofilm formation, and multi-drug efflux pumps.
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