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Flashcards in infectious disease Deck (222)
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What is the etiology of septicemia in a child 1-12 months?

GBS
E. coli
Strep pneumo
Staph aureus
Salmonella

1

What is the proper treatment in a septic newborn born to a mother with flu like symptoms and white nodules on placenta?

Amp and gent for listeria

2

What is the infectious etiology associated with rose spots in the skin?

Salmonella typhosa

3

What is the infectious etiology associated with ecthyma gangrenosum (large pustules on indurated inflamed base)?

Pseudomonas

4

What is the infectious etiology of non blanching rash and petechiae?

Neisseria

5

What is the common benign side effect of rifampin?

Orange secretions

6

What is the prophylactic drug of choice for meningococcemia?

Rifampin

7

What are the indications for meningococcemia prophylaxis?

Persons with contact to oral secretions
Household contacts or close contacts outside the house

8

What should you consider in a patient with elevated d dimer, low platelets and low fibrinogen?

DIC

9

What etiology should you consider in septic shock and how should you empirically treat?

Vancomycin and ceftriaxone to cover meningococcemia

10

What are the likely causes of meningitis in the neonate?

GBS
Listeria
E. coli
Enterovirus

11

What are the common causes of meningitis in young children?

Strep pneumo
Neisseria meningitidis
Enterovirus
Borrelia burgdorferi
Rickettsia

12

What complications of meningitis should be monitored for?

Focal deficits and SIADH

13

When does primary peritonitis occur?

Without an obvious intraabdominal source in patients with nephrotic syndrome or cirrhosis

14

What is the treatment for pneumococcal peritonitis ?

Third generation cephalosporin PLUS aminoglycoside

15

What type of abdominal infection is the likely source in a child with nephrotic syndrome? Why?

Encapsulated organism such as pneumococcus due to loss of IgG

16

What is the likely source of infection in a child with secondary peritonitis?

Gram negative organisms and anaerobes

17

What should you consider as a diagnosis in a dialysis patient with fever and abdominal pain ? What infectious etiology would you consider ?

Secondary peritonitis due to perforated bowel - due to staph epidermidis

18

What is the most common cause of vp shunt infection?

Staph epidermidis

19

What organisms does latex agglutination test for?

GBS
H. Flu
Neisseria meningitidis
Strep pneumo

20

When is latex agglutination helpful?

When partially treated infections are unreliably detected by culture

21

When can latex agglutination give false positives?

After HIb vaccine or with cross reactivity of E. coli

22

What is the treatment of choice in an immunocompromised child with fever or neutropenia ?

Zosyn + aminoglycoside OR
Ceftazidime (gram negative coverage)

23

What is used for prophylaxis against PcP?

Bactrim

24

What diagnosis should you consider in a patient with ground glass appearance on X-ray?

Pcp and HIV

25

What is the treatment for cryptosporidium ?

Nitazoxanide

26

What are the symptoms of cryptosporidium ?

Diarrhea that is severe, non bloody, watery lasting up to 10 days

27

What bacteria should you consider in a patient with intracytoplasmic inclusion bodies on scraping ?

Chlamydia pneumonia

28

What diagnosis should you consider in a patient with afebrile staccato cough, tachypnea and eye discharge?

Chlamydia pneumonia

29

How is chlamydia definitively diagnosed?

Chlamydia trachomatis - PCR
Chlamydia pneumoniae - microimmunofluotescent antibody test