Intussusception

Question 1

intussusception

Answer 1

part of the intestine invaginates into an adjoining segment of the intestine

Question 2

who does it affect?

Answer 2

infants, but can affect adults

Question 3

prevalence?

Answer 3

1-4 in 1000 births

Question 4

common area?

Answer 4

ileocecal valve

narrower bowel moves into wider bowel (or vice versa)

buildup of pressure forces smaller bower to invaginate into the large bowel

Question 5

what can cause an increase in pressure?

Answer 5

• tumors (causes inflmtn too)

- constipation

Question 6

patho

Answer 6

invagination -> bowel obstruction -> inflmtn -> increased exudate, hyperemia -> edema

obstr = increased intralumenal pressure, pushes against wall and constricts vessels in bowel wall -> ischemia -> infarction

necrosis of tissue = perf in area of bowel, and bacteria can infect the necrotic tissue -> bacterial peritonitis

Question 7

complx

Answer 7

• perforation
• peritonitis
• infarction

Question 8

treatment

Answer 8

• hydrostatic reduction: water-soluble contrast medium that provides pressure to push back the invaginated area (air pressure + water pressure)
• Sx for complx