Exam 2 SI sx

Question 1

pathophysiology associated w/ intestinal FB / obstructions

Answer 1

proximal gas & fluid accumulation

wall ischemia

• mucosal sloughing
• bacterial translocation

Question 2

difference b/t linear & nonlinear FB pathophysiology

Answer 2

in nonlinear: there is proximal gas accumulation due to obstruction & mucosal sloughing d/t mucosal wall ischemia due to pressure of FB

in linear: peristalsis carries FB down GIT to form accordion-like pleats -> FB embeds in mesenteric border & can perforate (sawing) intestines

Question 3

clinical & radiological signs of linear FB

Answer 3

CS: vomiting, anorexia, depression, pain on abd palp w/ clumping & pleating of intestine

Plicated intestines w/o contrast, w/ contrast pleating more obvious w/ teardrop shaped air bubbles

Question 4

how are linear FB managed surgically

Answer 4

entrotomy(ies)

catheter technique

Question 5

potential short & long term complications of linear FBs

Answer 5

mesenteric perforations

septic peritonitis

adhesions

Question 6

characteristic radiographic findings of nonlinear & linear FB

Answer 6

nonlinear: multiple loops of gas filled dilated intestines
linear: plicated intestines bunched in central abdomen

Question 7

what is intussusception

what are parts of intussusception

at what locations do they most commonly occur

Answer 7

invagination of 1 portion of bowel loop into an adjacent segment

intussuscipiens (outside segment)

intussusceptum (inside segment)

can occur anywhere

Question 8

typical signalment for intussusception