Clinical Bacteriology Flashcards Preview

First Aid: Microbiology > Clinical Bacteriology > Flashcards

Flashcards in Clinical Bacteriology Deck (67)
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1

Staphylococcus aureus causes....

  • Inflammatory disease
  • Toxin-mediated disease
  • MRSA infection 

2

How does Toxic Shock Syndrome (S. aureus) present?

  • Fever
  • Vomiting 
  • Rash
  • Desquamation
  • Shock
  • End-organ failure 

3

Staphylococcus epidermidis infects....

prosthetic devices & intravenous catheters 

4

___________ is the 2nd most common cause of uncomplicated UTI in young women. 

Staphylococcus saprophyticus 

5

Streptococcus pneumoniae causes....

MOPS

  • Meningitis
  • Otitis media (children)
  • Pneumonia 
  • Sinusitis 

6

Viridan's group streptococci causes...

  • dental caries (Streptococcus mutans)
  • subacute bacterial endocarditis (S. sanguinis) 

7

Streptococcus pyogenes (group A) causes....

  • Pyogenic
    • pharyngitis, cellulitis, impetigo 
  • Toxigenic
    • scarlet fever, toxic shock-like syndrome, necrotizing fasciitis 
  • Immunologic 
    • rheumatic fever, acute glomerulonephritis

8

J(<3)NES criteria for rheumatic fever 

  • Joints - polyarthritis 
  • <3 - carditis 
  • Nodules (subq)
  • Erythema marginatum 
  • Sydenham chorea

9

Scarlet fever triad 

  • Scarlet rash w/ sandpaper-like texture
  • Strawberry tongue 
  • Circumoral pallor 

10

Streptococcus agalactiae (group B) causes....

mainly in babies 

  • pneumonia
  • meningitis
  • sepsis

11

Enterococci (group D) causes...

  • UTI
  • biliary tract infections
  • subacute endocarditis 

12

Streptococcus bovis (group D) causes....

  • colonizes the gut 
  • bacteremia & subacute endocarditis 
  • colon cancer patients 

13

Symptoms of Corynebacterium diphtheriae 

  • pseudomembranous pharyngitis (gray-white membrane)
  • lymphadenopathy 
  • myocarditis 
  • arrhythmias 

14

Corynebacterium diphtheriae pneumonic 

ABCDEFG

  • ADP-ribosylation
  • Beta-prophage 
  • Corynebacterium
  • Diphtheriae 
  • Elongation Factor 2
  • Granules 

15

_________ causes spastic paralysis. 

_________causes flaccid paralysis. 

Clostridium tetani

Clostridium botulinum 

16

reheated rice syndrome

Bacillus cereus 

17

the only gram (+) organism to produce LPS

Listeria monocytogenes 

18

What kind of TB?

  • Ghon focus (mid-zone of lung)
  • Fibrocaseous cavity lesion (upper lobes)

  • Primary TB
  • Secondary TB

19

What are the 4 classic symptoms of TB?

  • Fever
  • Night sweats
  • Weight loss
  • Hemoptysis 

20

What are the 2 forms of Hansen disease?

How do they differ?

  • Lepromatous
    • Leonine (lion-like) facies
    • Low cell-mediated immunity
    • Humoral Th2 response 
  • Tuberculoid
    • Hypoesthetic, hairless skin plaques
    • High cell-mediated immunity
    • Th1 type immune response 

21

Haemophilus pneumonic 

HaEMOPhilus

  • Epiglottitis
    • "cherry red" in children 
  • Meningitis
  • Otitis media
  • Pneumonia 

22

How do you culture Legionella?

use silver stain --> grow on charcoal yeast extract culture w/ iron & cysteine

 

23

Definitions

  • Legionnaire's disease
  • Pontiac fever 

  • Legionnaire's disease
    • Severe pneumonia 
    • Fever
    • GI & CNS symptoms 
  • Pontiac fever
    • Mild flu-like syndrome 

24

Pseudomonas pneumonic 

PSEUDOmonas 

  • Pneumonia (CF)
  • Sepsis
  • External otitis
  • UTI
  • Drug use
  • Diabetic Osteomyelitis 

25

Ecthyma gangrenosum

  • rapidly progressive necrotic cutaneous lesions caused by Pseudomonas bacteremia 
  • immunocompromised patients 

26

E. coli virulence factors 

  • Fimbriae - cystitis & pyelonephritis 
  • K capsule - pneumoni, neonatal meningitis 
  • LPS endotoxin - septic shock 

27

EIEC

  • Toxin & Mechanism 
  • Presentation 

  • invades intestinal mucosa
  • necrosis & inflammation
  • invasive, dysentery 

28

ETEC

  • Toxin & Mechanism
  • Presentation

  • heat-labile & heat-stable enterotoxins 
  • traveler's diarrhea (watery) 

29

EPEC

  • Toxin & Mechanism 
  • Presentation 

  • adheres to apical surface
  • flattens villi, prevents absorption
  • diarrhea in children (Pediatrics)

30

EHEC

  • Toxin & Mechanism
  • Presentation 

  • O157:H7 is the most common serotype 
  • Hemolytic Uremic Syndrome
    • Anemia 
    • Thrombocytopenia 
    • Acute renal failure 
  • dysentery, doesn't ferment sorbitol