March 20 test 2

Question 1

Syphilis can cause a maculopapular rash on the palms and soles that occur weeks to months after infection. If untreated what can occur?

Answer 1

Gummas
Aortitis--vasa vasorum destruction
Neurosyphilis--tabes dorsalis
Argyll Robertson pupil
Aortic insufficiency

Question 2

What organisms is the most common cause of otitis externa?

Answer 2

Pseudomonas aeruginosa

Swimmers ear

Question 3

What are the 3 most common causes of meningitis in a newborn-6mo?

Answer 3

Group B strep
E. coli
Listeria

Question 4

What viral infection typically predisposes immunocompetent pts to develop bacterial pneumonia?

Answer 4

Influenza–Negative sense enveloped ssRNA segmented virus

Question 5

Genes for what 5 bacterial toxins are encoded in a lysogenic phage (Specialized transduction)?

Answer 5

ABCD’S

• Group A strep erythrogenic toxin
• Botulinum toxin
• Cholera toxin
• Diphtheria toxin
• Shiga toxin

Question 6

What are the initial symptoms of JC virus seen in HIV pts?

Answer 6

PML–neuro deficients of speech, memory and coordination–vision problems are also common

Disease causes multiple areas of demyelination within the white matter