Investigations in gastroenterology: Part 1

Question 1

What test do you do to investigate post eradication therapy for H pylori?

Answer 1

Urea breath test

Question 2

What does urea breath test contain?

Answer 2

Carbon 13

Question 3

If a patient has consumed an antibacterial medication (penicillin), how long should you wait before you do a urea breath test?

Answer 3

4 weeks

Question 4

If a patient has consumed an anti-secretory drug (PPI), how long should you wait before you do a urea breath test?

Answer 4

2 weeks

Question 5

What is the difference between iron deficiency anaemia vs anaemia of chronic disease?

Answer 5

Iron deficiency anaemia

• Microcytic
• Would have high total iron binding capacity due to iron not being bound
• Ferritin would be low due to there being no iron to store

Anaemia of chronic disease

• Microcytic anaemia
• Low total iron binding capacity
• High ferritin as it stores iron outside the blood to keep away from bacteria

Question 6

When testing for hepatitis B, what indicator would show that someone has an acute or chronic infection?

A - IgG anti-HBc
B - IgM anti-HBc

Answer 6

A - Chronic

B - acute

Question 7

When testing for hepatitis B, what indicator would show that someone has an acute or chronic infection?

A - IgG anti-HBc
B - IgM anti-HBc

Answer 7

A - Chronic

B - acute

Question 8

What test diagnoses H pylori?

Answer 8

Stool test