Infectious Disease

Question 0

What organism is tetanus?

Answer 0

Clostridium tetani (G+ rod)

Question 1

Owl eye inclusion bodies should make you think of what diagnosis?

Answer 1

Cytomegalovirus (CMV)

Question 2

Tx for shigella?

Answer 2

Bactrim or quinolone plus hydration

Question 3

Minimum time needed for tick to transfer Lyme dz to a human?

Answer 3

24h

Question 4

Drug of choice tx Lyme dz in kids or pregnant women?

Answer 4

Amox

Question 5

Exanthema subitum

Answer 5

Roseola infantum, 6th disease
Occurs MC in children under 2
Is a major cause of infantile febrile seizures
Prominently chest & abdominal rash occurs w/ defervescence

Question 6

Histoplasmosis

Answer 6

Fungi- bird droppings and bat exposure.

Chronic- atypical cavities & calcified nodes on CXR

Question 7

What is the treatment for botulism?

Answer 7

Antitoxin

Question 8

What drug is used for the treatment or prophylaxis of malaria?

Answer 8

Chloroquine

Question 9

A patient was camping a few days ago and now has a rash that began on his wrist and ankles. What is the most likely diagnosis?

Answer 9

Rocky mountain spotted fever

Question 10

Any reference to dark field microscopy should make you think of what organism?

Answer 10

Treponema pallidum (syphilis)

Question 11

A patient being treated with penicillin for syphilis infection develops fever, chills, muscle pain and headaches. Do you stop treatment?

Answer 11

No this is Jarisch-Herxheimer reaction. The patient must be closely monitored, but it is a response to released endotoxin from the death of the spirochetes and not an allergic reaction.

Question 12

A painless, clean base chancre should make you think of what diagnosis?

Answer 12

Primary syphilis

Question 13

Is pseudomonas gram (+) or gram (-)?

Answer 13

Gram (-)

Question 14

Name three serious reactions a patient may have with the use of vancomycin?

Answer 14

Nephrotoxicity, ototoxicity and Stevens-Johnson syndrome

Question 15

Is neisseria gram (+) gram (-)?

Answer 15

Gram (-)

Question 16

A gram (-) diplococci should make you think of what diagnosis?

Answer 16

Neisseria

Question 17

What is the MC prophylactic antibiotic used preoperatively?

Answer 17

Cephalexin (Ancef)

Question 18

What oral antibiotic can be used for pseudomonas?

Answer 18

Ciprofloxacin

Question 19

What is the treatment for tetanus infections?

Answer 19

Penicillin, immune globulin and supportive care (especially respiratory support).

Question 20

What type of mosquitoes carry malaria?

Answer 20

Infected female anopheline mosquitoes

Question 21

A CT scan shows ring enhancing lesions in an HIV patient. What is the most likely diagnosis?

Answer 21

Toxoplasmosis

Question 22

What antibiotic class is the class of choice for chlamydia?

Answer 22

Macrolides

Question 23

Community acquired carditis is most often caused by one of the HACEK organisms. List the HACEK organisms.

Answer 23

Haemophilus, Actinobacillus, Cardiobacterium, Eikenella, Kingella.

Question 24

Is Klebsiella gram (+) or gram (-)?

Answer 24

Gram (-) rod

Question 25

What is the best test for diagnosing rocky mountain spotted fever?

Answer 25

Indirect immunofluorescent antibodies.

Question 26

A gram-negative coccobacilli found in the sputum of a patient with pneumonia should make you think of what diagnosis?

Answer 26

H.flu

Question 27

What is the drug of choice to treat C. difficile?

Answer 27

Metronidazole (Flagyl)