FA Gram Neg Rods I

Question 1

Small gram neg coccobacillary rod with aerosol transmission that produces IgA protease

Answer 1

H influenzae B

Question 2

Most invasive disease caused by H flu type

Answer 2

B

Question 3

What strains of H flu cause mucosal infections (conjunctivitis, bronchitis, otitis media)?

Answer 3

Nontypeable

Question 4

HaEMOPhilus causes

Answer 4

Epiglottitis (“cherry red” in children)
Meningitis
Otitis media
Penumonia

Question 5

How do you treat H flu mucosal infections?

Answer 5

amoxicillin +/- clvulanate

Question 6

How do you treat H flu B meningitis?

Answer 6

ceftriaxone to the person and rifampin to close contacts

Question 7

when a child has H flu, mom goes to five and dime store for chocolate

Answer 7

Culture on chocolate agar requires factor V (NAD+) and X (hematin) for growth; can also be growth with Staph Aureus, wh/ provides factor V

Question 8

H flu vaccine contains

Answer 8

type B capsular polysaccharide conjugated to diphtheria toxoid or other protein

Question 9

at what age do you give HiB vaccine?

Answer 9

2 mo - 18 mos

Question 10

H flu epiglottitis on lateral neck radiograph

Answer 10

“Thumbprint sign”

Question 11

Gram negative rod that stains poorly, so usually use silver stain to visulaize

Answer 11

legionella pneumophilia

Question 12

electrolyte abnormality w/ legionella pneumophila

Answer 12

hyponatremia

Question 13

on what culture does legionella grow?

Answer 13

Charcoal yeast extract culture with iron and cysteine

Question 14

how is legionella detected clinically?

Answer 14

presence of antigen in urine

Question 15

legionella transmission

Answer 15

aerosal transmissionf rom environmental water source habitat (air conditioning, hot water tanks). NO person-to-person transmission

Question 16

legionella treatment

Answer 16

macrolide or quinolone

Question 17

severe pneumonia + fever + GI and CNS symptoms

Answer 17

Legionnaire’s disease

Question 18

what do you call a mild flu-like syndrome caused by legionella?

Answer 18

Pontiac fever

Question 19

Aerobic, gram neg rod, non-lactose fermenting, oxidase _

Answer 19

pseudomonas aeruginosa

Question 20

What type of pigment and odor does pseudomonas produce?

Answer 20

pyocanin (blue-green pigment); grape-like odor

Question 21

Tell me about pseudomonas toxins

Answer 21

Endotoxin –> fever + shock

exotoxin A –> inactivates EF-2

Question 22

Malignant otitis externa in diabetics

Answer 22

Pseudomonas

Question 23

Associated with wound and burn infections

Answer 23

Pseudomonas

Question 24

PSEUDOmonas

Answer 24

Pneumonia esp in CF
Sepsis
External otitis media (swimmer's ear)
UTI
Drug use & Diabetic osteomyelitis

Question 25

Hot tub folliculitis

Answer 25

Pseudomonas

Question 26

What do you call the rapidly progressive necrotic cutaneous lesions caused by Pseucdomonas bacteremia that you typically seen in immunocompromised patients

Answer 26

Ecthyma gangrenossum

Question 27

How do you treat Pseudomonas

Answer 27

Aminoglycoside plus extended specter penicillin (piperacillin, ticarcillin, cefepime, imipenem, meropenem)

Question 28

Chronic pneumonia in CF patients caused by Pseudomonas is associated with

Answer 28

biofilm

Question 29

Psudomonas AERugoinosa

Answer 29

AERobic, think water connection and blue-green pigment

Question 30

burn victim

Answer 30

Pseudomonas