FN: Diarrhoea Flashcards Preview

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Flashcards in FN: Diarrhoea Deck (12):
1

Definitions

1. Diarrhoea = raised tool water - raised stool freqeuncy
2. Steatorrhoea = raised tool fat - pale, float, smelly

2

Acute features and causes

suspect gastroenteritits
Travel, diet, contacts?

3

Chronic features and causes

Diarrhoea alternating with constipation: IBS
Anorexia, weight loss, nocturnal diarrhoea: organic cause

4

Bloody diarrhoea causes

1. Vascular: ischaemic collitis
2. Infective: campylobacter, shigella, salmonella, E. coli, amoeba, pseudomembranous, collitis
3.Inflammatory: UC, Crohn's
4. Neoplastic: CRC, polyps

5

Mucus presence

IBS
CRC
Polpys

6

Pus

IBD
Diverticulitis
Abscess

7

Associations with medical disease

1. Raised T4
2. autonomic neuropathy (e.g. DM)
Carcinoid

8

Association with drugs

Abx
PPI, cimetidine
NSAIDS
Digoxin

9

Investigations

Blood
Stool

10

Blood

1. FBC: raised WCC, anaemia
2. U+E: reduced potassium, dehydration
3. Raised ESR: IBD Ca
4. Raised CRP: IBD, infection
5. Coeliac serology: anti-TTG or anti-endomysial Abs

11

Stool

MCS and C. diff toxin

12

Rx

Treat cause
Oral or IV rehydration
Codeine phosphate or loperamide after each loose stool
Anti-emetic if association with n/v e.g. prochlorperazine
Abx (e.g. cipro) in infective diarrhoea - systemic illness

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