EXAM #1: CASE II

Question 1

Which does not ferment lactose, E. coli or Salmonella?

Answer 1

Salmonella

Question 2

How should you initially treat a child with Salmonella food poisoning?

Answer 2

Supportive care

*Note that abx can PROLONG fecal shedding

Question 3

What parasite is strongly associated with bloody diarrhea?

Answer 3

Entamoeba histolytica

Question 4

What is the initial treatment for RSV?

Answer 4

Watchful waiting

Question 5

What is the most likely cause of an aspiration pneumonia IN A NURSING HOME?

Answer 5

Streptococcus pneumoniae*

*This is the most common cause of nursing home acquired pneumonia

Question 6

A patient with a painful penile lesion, beefy red base, and tender inguinal lymph nodes most likely has?

Answer 6

Chancroid

Question 7

A patient with a painful penile lesion, beefy red base, and tender inguinal lymph nodes. You think its Chancroid, how do you rule out Herpes?

Answer 7

Tzanck Smear

Question 8

What is RPR/VDRL used to diagnose?

Answer 8

Syphilis

Question 9

Describe a positive Tzanck smear?

Answer 9

Large multinucleated lobules

Question 10

What organism causes Chancroid?

Answer 10

Haemophilus ducreyi

Question 11

If you see gram positive cocci in clusters, what should you suspect?

Answer 11

S. aureus

Question 12

How can you tell the difference between S. aureus and S. epidermidis in the lab?

Answer 12

Coagulase