GI infection Tx

Question 1

Descending paralysis, canned/vacuum packed food

Answer 1

C botulinum

Tx- antitoxin

Question 2

reheated meals, superantigen enterotoxin, watyer diarrhoe + cramps, gas gangrene

Answer 2

C perfringens

Question 3

pseudomembranous colitis, A & B exotoxins

Answer 3

C Diff

Metronidazole and vancomycin po 14/7

Question 4

Reheated rice, sudden vomiting, watery non-bloody diarhoea

Answer 4

B cereus, self limiting

Question 5

Prominent vomiting, watery non bloody diarrhoea, protein A exotoxin, catalase, coagulase +ve, beta haemolytic

Answer 5

S aureus

Self Limiting

Question 6

Gram -ve, anaerobe, oxidase -ve

Answer 6

E coli

Self limiting, but ciprofloxacin can be used

Question 7

Multiplies in peyers patches, slow onset fever and constipation, ROSE SPOTS, Smegaly, anaemia, leukopenia

Answer 7

S typhi/parathyphi

ceftriaxone or ciprofloxacin

Question 8

Distal ileum and colon affected, bloody diarrhoea, Shiga enterotoxin

Answer 8

Shigella

Avoid Abx, ciproif rqd

Question 9

mesenteric adenitis, necrotising granulomas, reactive arthritis, erythema nodosum, cold enrichment

Answer 9

yersinia

Question 10

Rice water stool, comma shaped, oxidase +ve, late lactose fermenter. massive diarrhoea without inflammation

Answer 10

Vibrio cholerae suppportive

Question 11

comma shaped, oxidase +ve, ingestion of raw seafood,

Answer 11

Parahaemolyticus

Doxycycline

Question 12

Cellulitis in shellfish handlers, fatal in HIV +ve

Answer 12

Vulnificus

Doxy

Question 13

Prodrome of headache, fever, abdo cramps
Bloody foul smelling diarrhoea
S shaped bacteria, oxidase +ve, motile
Assoc with GBS, reactive arthritis

Answer 13

CAmpylobacter
erythromycin
cipro if first 4/7d

Question 14

Watery diarrhoea, cramps, headache, fever, LITTLE VOM
Refridgerated food
V or L shaped, B haemolytic
TUMBLING MOTILITY

Answer 14

Listeria

Ampicillin, ceftriaxone, cotrimoxazole

Question 15

Motile trophozoite in stool
Colonise colon
Bloody diarrhoea, weight loss + RUQ pain –> liver abscess
EMQ MSM, soil

Answer 15

Entamoeba histolytica

Metronidazole

+ paromomycin if luminal disease

Question 16

PEar shaped trophozoite, cysts in stool
Faecally contaminated H2O
Foul smelling, non bloody diarrhoea, due to fat malabsorption
GAS

Answer 16

Giardia

Metronidazole

Question 17

Oocysts in stool
severe diarrhoea in immunocompromised
Infects jejunum

Answer 17

Cryptosporidium

paromomycin (nitazoxanide in children)