Gastroenterology

Question 1

At what week gestation does the GI tract appear and complete by?

Answer 1

Appears at 4 weeks and complete by 12 weeks

Question 2

What is duodenal atresia and what is the most common site?

Answer 2

malformation of the duodenum causing bowel obstruction. Most common site is ampulla of vater

Question 3

How does duodenal atresia present?

Answer 3

Billous vomiting with the first feed + double bubble of USS imaging

Question 4

What is exomphalos?

Answer 4

Midline defect of the anterior abdominal wall where some of the organs are contained in a sac and lie outside the abdominal cavity

Question 5

Name some risk factors for gastroschisis?

Answer 5

Low maternal age, drug misuse, smoking, ethnic origin

Question 6

What is the omphalomesenteri duct?

Answer 6

A temporary embryonic structure in developing fetuses that connects the yolk sac to the midgut (part of the digestive system)

Question 7

What is meconium ileus and what can it be a manifestation of?

Answer 7

Unusually sticky and thick meconium blocking the ileum and causing a small bowel obstruction. Can be the first manifestation of cystic fibrosis

Question 8

What are the most commonly affected sites for Hirschprungs disease? And what is Hirschprungs?

Answer 8

Hirschprungs disease is when there is an absence of ganglion cells in a segment of bowel. The most common sites are sigmoid and rectum

Question 9

What is the most common site for intussusception?

Answer 9

Ileo-caecal junction