Infectious Disease Flashcards Preview

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Flashcards in Infectious Disease Deck (49)
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0

Pt with history of bird exposure p/w fever, cough, dyspnea. Diagnosis? Tx?

Cryptococcus treat with diflucan for 10+ weeks

1

What is the likely cd4 count of an aids patient p/w cryptococcal meningitis?

<50

2

Pt with exposure to bats/birds with pulm symptoms and oral ulcers with punctate lesions on X-ray?

Histoplasmosis

3

Tx of choice for PJP?

Bactrim

4

How does botulism act?

Inhibits the release of acetylcholine

5

Rice water stool

Cholera

6

Pt with gastroenteritis with fever, and pain and vomiting. Likely which pathogen?

Salmonella

7

Pea soup floating diarrhea

Salmonella

8

Blood in diarrhea with fever with punctate lesions on colonoscopy

Shigella

9

India ink stain positive

Cryptococcus

11

Fever with rash/petechiae, hyponatremia, thrombocytopenia, elevated LFTs. Diagnosis? Treatment?

Rocky Mountain spotted fever, treat with doxy unless pregnant: chloramphenicol

12

At what temperature fever is irreversible brain damage caused?

> 106.8

13

What are the diagnostic criteria for fever of unknown origin (3)?

Fever > 101.8, > 3 weeks with at least 1 weeks work up for a cause

14

What medium does streptococcus grow on in the micro lab?

blood agar

15

Pt presents with fever, diffuse erythematous rash that blanches and is rough like sandpaper or goose bumps. Her face is flushed with circumoral pallor and strawberry tongue. Diagnosis?

Scarlet fever induced by strep pharyngitis

16

Thick honey colored crust skin lesions

strep/staph impetigo - must be treated with antibiotics

17

15 yo patient presents with a lacunar rash with central clearing and strange purposeless movements. Diagnosis? Names for these sypmtoms. What is the greatest mortality risk of this position.

Acute Rheumatic fever - erythema marginatum and sydenham chorea. Mortality risk: carditis leading to death or irreversible valvular injury

18

What is the treatment for strep pharyngitis for a PCN allergic patient?

macrolides

19

Pt presents with severeal lesions that are vesicular with a purple-to-black center which the patient says were just red bumps before. Cultures of the contents of the vesicle yield gram-positive box-shaped rods in chains. Diagnosis?

Anthrax

20

What is the treatment of choice in a patient with anthrax?

cipro

21

What is the composition of oral rehydration solution?

I cup water, 1 tsp salt, 4 tsp sugar

22

What is the treatment of choice for Shigella?

Bactrim

23

What is the treatment of choice in diphtheria?

PCN or emycin

24

What is the treatment of choice for pertussis?

emycin

25

Pt presents with acute onset fever, malaise, HA and sore throat. On exam, vesicles are seen in the posterior pharynx. What is the likely cause?

Herpes initial infection

26

Pt presents with fever, HA, altered mental status. CSF fromLP shows elevated protein and normal glucose. What is the next step in establishing the diagnosis?

send HSV DNA by PCR and get an MRI

27

What is the risk to the fetus of a mother with herpes? What can be done?

visceral and CNS infection, often C-section is performed

28

11 yo F has just gotten over the flu and presents with vomiting, jaundice and new onset seizures. Labs show increased LFTs, ammonia levels and prolonged PTT. Diagnosis? Tx?

Reye's syndrome reactive to influenza, treatment is supportive

29

What is the recommended time frame to start antiviral medications in a patient with influenza?

48 hours

30

What are the indications/contraindications to zostavax?

indications: > 60, contra: allergy to gelatin or neomycin or other contraindications for live vaccine