Infectious Disease Flashcards Preview

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Flashcards in Infectious Disease Deck (52):
1

3 MCC of fever of unknown origin (FUO)

Infection, cancer, and autoimmune dz

2

4 signs and sx of streptococcal pharyngitis

Fever, pharyngeal erythema, tonsillar exudate, lack of cough

3

Nonsuppurative complication of strep infection that is not altered by treatment of 1` infection

Postinfectious glomerulonephritis

4

Most common predisposing factor for acute sinusitis

Viral URI

5

Asplenic pts are particularly susceptible to these organisms.

Encapsulated organisms - pneumococcus, meningococcus, Haemophilus influenzae, Klebsiella

6

Number of bacteria needed on a clean-catch specimen to dx a UTI

10^5 bacteria/mL

7

Which healthy population is susceptible to UTIs?

Pregnant women. Tx this group aggressively b/c of potential complications.

8

Pt from California or Arizona presents w/ fever, malaise, cough, and night sweats. Dx? Tx?

Coccidioidomycosis; amphotericin B

9

Nonpainful chancre

1` syphillis

10

A "blueberry muffin" is characteristic of what congenital infection?

Rubella

11

Meningitis in neonates. Causes? Tx?

Group B strep (GBS), E. coli, Listeria. Tx w/ gentamicin and ampicillin

12

Meningitis in infants. Causes? Tx?

Pneumococcus, meningococcus, H influenzae. Tx w/ cefotaxime and vancomycin

13

What should always be done prior to LP?

Check for increased ICP; look for papilledema

14

CSF findings: Low glucose, PMN predominance

Bacterial meningitis

15

CSF findings: Normal glucose, lymphocytic predominance

Aseptic (viral) meningitis

16

CSF findings: Numerous RBCs in serial CSF samples

Subarachnoid hemorrhage (SAH)

17

CSF findings: increased gamma globulins

MS

18

Initially presents w/ pruritic papule w/ regional lymphadenopathy; evolves into a black eschar after 7-10 days. Tx?

Cutaneous anthrax. Tx w/ penicillin G or ciprofloxacin

19

Findings in 3` syphillis

Tabes dorsalis, general paresis, gummas, Argyll Roberson pupil, aortitis, aortic root aneurysms.

20

Characteristics of 2` Lyme dz

Arthralgias, migratory polyarthropathies, Bell's palsy, myocarditis

21

Cold agglutinins

Mycoplasma

22

24 y/o man presents w/ soft white plaques on his tongue and the back of his throat. Dx? Workup? Tx?

Candidal thrush. Workup should include an HIV test. Tx w/ nystatin oral suspension.

23

At what CD4 count should Pneumocystis jiroveci pneumonia prophylaxis by initiated in an HIV-(+) pt?

= 200 for P jiroveci w/ TMP-SMX

24

At what CD4 count should Mycobacterium avium-intracellulare (MAI) pneumonia prophylaxis by initiated in an HIV-(+) pt?

= 50-100 for MAI w/ clarithromycin/azithromycin

25

Risk factors for pyelonephritis

Pregnancy, vesicoureteral reflux, anatomic anomalies, indwelling catheters, kidney stones

26

Neutropenic nadir postchemotherapy

7-10 days

27

Erythema migrans

Lesion of 1` Lyme dz

28

Classic physical findings for endocarditis

Fever, heart murmur, Osler's nodes, splinter hemorrhages, Janeway lesions, Roth's spots

29

Aplastic crisis in sickles cell dz

Parvovirus B19

30

Ring-enhancing brain lesion on CT w/ seizures

Taenia solium (cysticercosis)

31

Name the organism: Branching rods in oral infection

Actinomyces israelli

32

Name the organism: Weakly gram-(+), partially acid-fast in lung infection

Nocardia asteroides

33

Name the organism: Painful chancroid

Haemophilus ducreyi

34

Name the organism: Dog or cat bite

Pasteurella multocida (px tx w/ augmentin)

35

Name the organism: Gardener

Sporothrix schenckii

36

Name the organism: Raw pork and skeletal muscle cysts

Trichinella spiralis

37

Name the organism: Sheepherders w/ liver cysts

Echinococcus granulosus

38

Name the organism: Perianal itching

Enterobius vermicularis

39

Name the organism: Pregnant women w/ pets

Toxoplasma gondii

40

Name the organism: Meningitis in adults

Neisseria meningitidis

41

Name the organism: Meningitis in elderly

Streptococcus pneumoniae

42

Name the organism: Meningoencephalitis in AIDS pts

Cryptococcus neoformans

43

Name the organism: Alcoholic w/ pneumonia

Klebsiella

44

Name the organism: "Currant jelly" sputum

Klebsiella

45

Name the organism: Malignant external otitis

Pseudomonas

46

Name the organism: Infection in burn victims

Pseudomonas

47

Name the organism: Osteomyelitis from a foot wound puncture

Pseudomonas

48

Name the organism: Osteomyelitis in a sickle cell pt

Salmonella

49

55 y/o man who is a smoker and a heavy drinker presents w/ a new cough and flulike sx. Gram stain shows no organisms; silver stain of sputum shows gram-(-) rods. What is the dx?

Legionella pneumonia

50

Middle-aged man presents w/ acute-onset monoarticuar joint pain and bilateral Bell's palsy. What is the likely dx, and how did he get it? Tx?

Lyme dz, Ixodes tick, doxycycline

51

Pt develops endocarditis 3 weeks after receiving a prosthetic heart valve. What organism is suspected?

S aureus or Staph epi

52

A pt develops endocarditis in a dative valve after having a dental cleaning

Strep viridans