Gastrointestinal Surgery Flashcards
what can cause a gastrointestinal obstruction?
foreign bodiess
intussusception
GI neoplasia
are GI foreign bodies more common in dogs or cats?
dogs
how should you evaluate small intestines in radiographs?
size: dilated or 2 populations of bowel
distribution/shape: bunching, stacking/plication, hairpin bends, eccentric comma or crescent-shaped gas bubbles
what are the most common locations of intussusception?
jejunum
ileocecocolic junction
what is the prognosis of GI adenocarcinoma in the stomach in dogs?
poor
which dogs usually get mesenteric volvulus?
young adult, medium to large breed
german shepherd most common
what is the most significant potential complication of GI surgery?
dehiscence/leakage leading to septic peritonitis
when does the proliferative phase of GI healing occur?
days 4-14
what is glucose like in abdominocentesis in septic peritonitis?
20 mg/dl or more lower than peripheral blood in abdominocentesis
is a bone in the stomach usually digestible?
yes
in what can you use a red rubber catheter technique?
linear foreign body surgery
how much of the small intestine can be resected?
up to 50%
when should you give antibiotic prophylaxis for a GI surgery?
30-60 minutes prior to incision
every 90 minutes during surgery
what causes intussusception?
inflammation of thee GI: abnormal motility
what is the risk of recurrence for intussusception?
6-27%
what does enteroplication do?
creates adhesions between small intestinal loops with suture
prevents telescoping of one segment into the next
where is a GI neoplasia not usually malignant?
rectum
usually malignant elsewhere
what GI neoplasias are seen in dogs?
adenocarcinoma
lymphoma
leiomyosarcoma/gastrointestinal stromal tumor
what is the prognosis of GI adenocarcinoma in cats?
significant risk of death within 2 weeks of surgery
high rate metastasis
what is the prognosis of a gastric adenocarcinoma in dogs?
poor: <6 months with surgery
what is a small intestinal adenocarcinoma like in dogs?
high rate metastasis
10 months MST without mets
what is a colorectal adenocarcinoma like in dogs?
MST 2-4 years with surgery
morphology affects prognosis: pedunculated, single best
for liquid stools after a megacolon subtotal colectomy, what increases the risk?
ICJ removal
when is risk of septic peritonitis after surgery greatest?
3-5 days postop
