Infectious Diarrhea Flashcards Preview

DEMS: Unit 1 > Infectious Diarrhea > Flashcards

Flashcards in Infectious Diarrhea Deck (10):
1

Leading causes of worldwide infectious disease deaths

  1. pneumonia
  2. diarrhea

2

Age groups most affected by infectious disease/diarrhea

  • young & old
  • diarrhea ==> dehydration = leading cause of morbidity and death

3

Types of infectious gastroenteritis (+ relative frequency)

  • viral = 30-40%
  • bacterial/parasitic = 20-30%
  • unknown = 40%

4

Non-inflammatory diarrhea: site, pathogens

  •   Site: Upper small bowel
  •   Pathogens:
    • Norwalk
    • Rotavirus
    • Giardia
    • Cholera
    • ETEC 

5

Inflammatory diarrhea: site, pathogens

  •  Site: Colon
  •  Pathogens:
    • C. jejuni
    • Shigella
    • Salmonella
    • E. coli O157:H7
    • C. difficile
    • E. histolytica

6

Pathogens ==> watery diarrhea

 

  • primarily agents that lead ==> non-inflammatory diarhhea @ small bowel
  • Vibrio cholerae
  • Enterotoxigenic E. coli
  • Rotavirus
  • Norwalk virus
  • Giardia lamblia
     

7

Leading cause of acute bacterial diarrhea

  • campylobacter jejuni

8

Pathogens ==> inflammatory diarrhea

  • Campylobacter jejuni
  • Salmonella sp.
  • Shigella sp.
  • E. coli 0157:H7
  • E. histolytica
     

9

Leading causes of nosocomial diarrhea

  • C. difficile is the leading, and virtually the only, cause of nosocomial infectious diarrhea
  • Culturing for other agents in this setting is not indicated
  • Most commonly associated with antibiotic use

10

Symptoms w/C. diff infection

  • mild diarrhea, watery or bloody
  • or may have fever, leukocytosis with severe colitis