QuestionSBA
QuestionChoice
This is incorrect. Salmonella tends to cause watery diarrhoea which resolves within a week. It is not implicated in the development of HUS and is therefore incorrect.
10025974
e
Salmonella
QuestionChoice
This is incorrect. Staphylococcus aureus tends to cause gastroenteritis. Symptoms start within hours of ingestion and last only 12-24 hours. This bacterium is not implicated in the development of HUS.
10025973
d
Campylobacter Jejuni
QuestionChoice
This is incorrect. Bacillus cereus causes a watery diarrhoea which resolves within 24 hours. It is classically caused by eating fried rice that has been left at room temperature.
10025972
c
Bacillus Cereus
QuestionChoice
This is correct. This patient is presenting with haemolytic uraemic syndrome (HUS), which can be identified by his anaemia, thrombocytopenia and an acute kidney injury following a bout of gastroenteritis. HUS is commonly caused by the shiga toxin. This is classically produced by the E.coli 0157 bacterium.
10025970
a
E.coli 0157
QuestionChoice
This is incorrect. Staphylococcus aureus tends to cause gastroenteritis. Symptoms start within hours of ingestion and last only 12-24 hours. This bacterium is not implicated in the development of HUS.
10025971
b
Staphylococcus Aureus
Concept
Chapter
2693
5871
Gastroenteritis
Topic
194
Infectious Diseases
E.coli 0157
17592
A 36-year-old male presents with bloody diarrhoea (up to 20 times daily), vomiting, and recent haematuria, starting after eating undercooked steak. He has not traveled abroad in the past year.  

His past medical history includes type 1 diabetes, and he takes insulin. He denies a personal or family history of inflammatory bowel disease or colorectal cancer.



Blood results are as follows:



||||
|--------------|:-------:|---------------|
|Haemoglobin|88 g/L|(M) 130 - 170, (F) 115 - 155|
|Mean Cell Volume (MCV)|84 fL|80 - 96|
|White Cell Count|10.2x10<sup>9</sup>/L|3.0 - 10.0|
|Platelets|72x10<sup>9</sup>/L|150 - 400|
|Sodium|135 mmol/L|135 - 145|
|Potassium|4.0 mmol/L|3.5 - 5.3|
|Urea|12.1 mmol/L|2.5 - 7.8|
|Creatinine|146 µmol/L|60 - 120|



Which of the following organisms is the most likely cause of this patient's gastroenteritis?
a