Gastroenterology

Question 1

During which week does an omphalocele form?

Answer 1

By week 10

Failure of intestinal tube to re-enter abdominal cavity after rotating 270 degrees

Question 2

At which week is the uncoordinated and coordinated swallowing and sucking ability present?

Answer 2

Week 16 (uncoordinated)
Week 34-36 (coordinated)

Question 3

At which week is meconium present?

Answer 3

Week 16

Question 4

At which week does lactase reach adult levels?

Answer 4

Week 36

Question 5

Most common TE fistula?

Answer 5

Upper esophageal atresia/pouch with distal fistula

Question 6

Which type of TE fistula is commonly asymptomatic?

Answer 6

Type H

Question 7

At which week does duodenal atresia form and whats the defect?

Answer 7

Failure of recanalization of intestinal tube at 10 weeks

Question 8

Most common location for SIP?

Answer 8

Terminal ileum

Question 9

What type of intestinal atresia is more common?

Answer 9

Jejunal-ileal. Most commonly is distal ileum, followed by proximal jejunum

Question 10

Polyhydramnios with jejunal-ileal atresia: more commonly seen with atresia in which location?

Answer 10

Jejunal atresia (1/3rd). Less commonly seen with ileal

Question 11

Common pathological cause of development of biliary atresia?

Answer 11

Viral induced inflammation (CMV, rota, reo)

Question 12

Most common early finding in infants with NEC

Answer 12

Intestinal ileus

Question 13

Most common site for post NEC strictures

Answer 13

Large intestine - left colon

Question 14

Pathogenesis of small left colon

Answer 14

Functional immaturity of ganglion cells

Question 15

Most reliable method to diagnose GERD?

Answer 15

Impedance monitoring

Question 16

Factors leading to adequate protein intestinal uptake in neonates?

Answer 16

Increased intestinal mucosal permeability

Increased secretory IgA levels

Question 17

Complication of Hirschsprung’s

Answer 17

Acute bacterial enterocolitis

Question 18

Most common cause of abdominal mass?

Answer 18

Hydronephrosis

Question 19

Pathogenesis of meconium plug?

Answer 19

Functional immaturity of myenteric plexus nerve cells leading to functional immaturity and hypomotility of colon

Question 20

Type of hyperbilirubinemia in Gilbert’s?

Answer 20

Indirect (intermittently)

Question 21

Cause of umbilical hernias?

Answer 21

Failure of ventral-medial growth of the rectus abdominis, resulting in failure of the umbilical ring to completely close, allowing herniation into the umbilicus

Question 22

Most common location for intussusception in premies?

Answer 22

Ileoileal

Question 23

Diagnostic test of choice for intussusception

Answer 23

Ultrasound

Dont use barium enemas because of the increased risk of perforation and peritonitis