Session 9 - Microbiology of the GI tract Flashcards Preview

ESA 3 - GI > Session 9 - Microbiology of the GI tract > Flashcards

Flashcards in Session 9 - Microbiology of the GI tract Deck (17):
1

What are the roles that bacteria play in supporting the normal function of the GI tract?

• Synthesise and excrete vitamins that are absorbed by host. Vit K, B12, thiamine and many other B vitamins.

• Prevent colonisation by pathogens

• Kill non-indigenous bacteria

• Stimulate development of MALT (mucosal associated lymphoid tissue)

• Stimulate production of natural antibodies

2

What 3 gram positive aerobic cocci inhabit the GI?

Staphylococci

Streptococci

Enterococci

 

All -cocci

3

What 2 gram negative aerobic cocci inhabit the GI?

Neisseria meningitidis

Neisseria gonorrhoeae

 

All neisseria

4

What 2 gram positive aerobic bacilli inhabit the GI?

Mycobacterium TB

Lactobacillus

5

What 4 gram negative aerobic enteric bacilli inhabit the GI?

E coli

Salmonella

H pylori

Vibrio cholera

6

What 2 non enteric gram negative aerobic bacilli inhabit the GI?

H. influenzae

Bordetella pertussis

7

What gram positive anaerobic bacilli inhabits the GI?

Clostridia tetani, difficile, and perfringens

8

What enteric gram negative anaerobic bacilli inhabits the GI?

Bacteroides fragilis

9

Give a common cause for oral thrush and its treatment

Candida albicans - amphotericin lozenges

10

Give a common cause for gingivitis

streptococcus mutans

11

Give a common cause for parotitis

staph aureus

12

Give a common viral and bacterial cause for tonsilitis

Adenovirus.

Strep pyogenes

13

Give a common cause for peptic ulcers

H pylori

14

What prophylaxis would you give to reduce surgical site infections?

Metroniadazole kills anaerobes and a broad spectrum antibiotic such as gentamicin or cephalosporin given.

15

Why is lactobacillus physiologically important in the vagina?

• Produces acidic environment in vagina

• Prevents other bacteria and candida albicans from growing

16

What is the commonest cause of UTI? How would you diagnose a UTI?

E. coli

Diagnose with an MSU

17