Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/17

Click to flip

17 Cards in this Set

  • Front
  • Back
Haemophilus influenza

Morphology:
(1) gram stain
(2) shape
(1) gram-neg
(2) coccobacilli
Haemophilus influenza:
Common structures shared with other gram-neg bacilli (4)
(1) Pili
(2) LOS -> tissue damage, inflamm response
(3) Outer memb proteins
(4) Capsule (type b PRP vs. unencapsulated)
Haemophilus influenza:
Growth requirements (3)
(1) X factor = hemin
(2) V factor = NAD
(3) CO2 (favorable, not required)
Haemophilus influenza type b (HITB)

Pathogenesis:
(1) Is it virulent?
(2) What infection can it cause?
(3) Pathways to this infection
(1) yes virulent
(2) meningitis
(3) hematogenous, or direct via CNS
Nontypable Haemophilus influenza
(NTHI)

Pathogenesis:
(1) Is it virulent?
(2) Prevalence in adults
(1) not virulent; colonizes many people
(2) 25% healthy, 50% chronic bronchitis
Haemophilus parainfluenza:
Is it virulent?
No, and even less so than NTHI
Haemophilus influenza biogroup aegyptius:
Is it virulent?
Yes, virulent b/c plasmid + part of type b genome
Haemophilus ducreyi

Pathogenesis:
(1) How does it penetrate?
(2) What does it cause?
(1) breaks in skin
(2) venereal chancre
Haemophilus influenza type b (HITB):
Diseases (5)
"SaM BEC"
(1) septic arthritis
(2) meningitis
(3) bacteremia
(4) epiglottitis
(5) cellulitis
Nontypable Haemophilus influenza (HTHI):
Diseases (6)
"TONs of PMS"
(1) tracheobronchitis
(2) otitis media
(3) newborn sepsis, puerperal fever
(4) pneumonia
(5) meningitis
(6) sinusitis
Haemophilus parainfluenza:
Diseases (2 common, 2 rare)
"BS PE"
(1) bronchitis
(2) sinusitis
(3) pneumonia (rare)
(4) endocarditis (very rare)
Haemophilus influenza aegyptius:
Diseases
(1) Brazilian hemorrhagic fever
(2) Conjunctivitis
(3) Bronchopneumonia
(4) Sepsis, shock
(5) DIC
Haemophilus ducreyi:
Diseases (2 features)
(1) Chancroid: painful venereal ulcer
(2) Enlarged local lymph nodes
Haemophilus influenza type b:
Host response
* Antibody to PRP capsule -> phagocytosis
* Antibodies to LOS -> bactericidal
Nontypable Haemophilus influenza:
Host response
* Children w/ otitis lack IgG at first, but develop it
* Normal adults have antibody
Moraxella catarrhalis:
(1) Human reservoir
(2) Resistance
(3) Vaccine
(4) Pathogenesis
(1) nasopharynx
(2) make B-lactamase
(3) none available
(4) not very virulent
Moraxella catarrhalis:
Diseases (4)
"TOAP"
(1) tracheobronchitis
(2) otitis media
(3) acute sinusitis
(4) pneumonia