Gastrointestinal Infections - Summary Notes

GlInfections
Classification:
By Origin By Place
Infection:
·

Endogenous




I
Desophagus:
-
Candida
from pre-existing GIT flora. CMV
-
·




·
most GIT flora are Anaerobes and Gram-negative bacteria.
stomach: -
H. Pylori
·
Candida Causes:
-



e.g. Antibiotics
-



-


E. Coli Small Bowel: -

GNR
immunosuppression
-




C. Diff Viruses
- -




Chemotherapy
-




Infection: Large Bowel:
Exogenous
· -
CMV
-

TB
from external microbes GNR
-
·




Campylobacter GNR
·




|
Liver:
- -




e.g.
-Salmonella/Typhoid Bacteria Viruses
-




E. Coli
↑ Parasites
- -




Staph Enterotoxin
-




Pancreas:
-

Mumps
-


Rotovirus I viruses
f
Notovirus
-




-

Giarda I Parasites
-


inworm/Tapeworm

Symptoms:
Diarrhoea
DIARRHOEA BACTERIA

Diarrhoea-watery/loose stool
(Type S-7), occuring 3x
per day over baseline frequency.
Due to inflammation of bowel/water malabsorption.
·



STOOL TYPES
The
key symptom ofGI infection is Diarrhoea.
·




Infections Causes:

Any GlBacterial Virus causing inflammation leads to Diarrhoea.
·




Bacteria cause this by releasing enterotoxins
leading to watery stool,
-




or
damaging mucosa
-




leading to Dysentry (Blood).

Dysentry:Salmonella, Shigella, Watery=C. Diff, Staph Aureus,
·




E. coli. (all Gram-tivel Cholera, E. Coli.


treatmentneeded other than fluid for C. Diff.
management, except
·
no

C. Diff treated with antibiotics and / or FMT.