Micro - GI Flashcards
How are c.boltulinum toxins inactivated?
Cooking
What causes the symptoms of c.botulinum?
Cleaves the snare proteins to prevent Ach release from peripheral nerves (descending paralysis)
How long do c.perfringens symptoms last?
24 hours
Which abx cause c.diff?
- Ciprofloxacin
- Cephalosporins
- Clindamycin
Why is reheating rice a risk factor for bacillus cereus?
Spores germinate
What is the incubation of bacillus cereus?
4 hrs
Which cytokines does staph aureus stimulate?
IL1/2
What is the incubation of staph aureus?
2-4 hours
What is the management of salmonella typhi?
IV ceftriaxone and then PO azithromycin
What is the management of e.coli infections?
Self limiting, but can treat with ciprofloxacin
What is the management of shigella?
Self limiting but can give ciprofloxacin if needed
How long does campylobacter jejuni infection last?
~10 days
What is the management of listera monocytogenes diarrhea?
Ampicillin
What is the source of yersinia enterocolitica?
Undercooked pork
What is the presentation of yersinia entercolitica?
- Fever
- Abdo pain
- Diarrhea (terminal ileitis)
- Could present like appendicitis
Which population is entamoeba histolytica more common in?
MSM
Management of entamoeba histolytica?
Metronidazole
What is the shape of giardia lamblia?
Pear-shaped trophozoite
What is the most common protozoal intestinal infection?
Giardia lamblia
Management of G. Lamblia?
Metronidazole
Presentation of Cryptosporidium Parvum?
Diarrhea in immunocompromised
(Kinyoun Acid Fast stain)
Managment of Cryptosporidium Parvum?
Paromomycin
Presentation of norovirus diarrhea?
Secretory diarrhea, adults
Presentation of adenovirus diarrhea?
Secretory diarrhea <2 years
What is the presentation of rotavirus diarrhea?
Secretory diarrhea <6 years, nursery outbreaks
