L01: equine Gastro 1 Pt.2 (Sanchez) Flashcards
right dorsal (large colon) displacement
pelvic flexure migrates cranially (med. or lat. to cecum)
dx of right dorsal (large colon) displacement
- rectal exam: gas distention, but difficult to differentially diagnose
- usually no reflux
biggest determination of whether horse needs sx
response to analgesics. If need sx, will be painful within 30 mins. - 2hr b/w meds
tx of right dorsal (large colon) displacement
fluids
limited exercise
sx correction
cecal impaction vs. large colon on rectal exam
if cecal impaction, won’t be able to get hand up and over the top of colon
1ary cause of LI strangulating obstruction
volvulus
CS of SI strangulation
- acute/severe pain
- tachycardia
- evidence of toxemia
- high volume reflux
Dx of SI strangulation
- CS + hemoconcentration, rectal exam: distended and thickened SI
- U/S: SI distention +/- thick walled
- Peritoneal fluid: serosanguinous, inc. protein/WBC/lactate relative to blood***
Tx of SI strangulation
- Sx correction
- good prognosis (poor/grave if >50% SI affected)
Possible causes of SI strangulation
- volvulus
- incarceration (epiploic foramen, inguinal hernia, umbilical hernia, mesenteric rent)
- Intestinal adhesions
- Intussusception
- Pedunculated lipoma
strangulating lipoma
lipoma forms in mesentery in long pedunculated stalk that can wrap around/cut of blood supply to part of intestine.
-usually in older horses
borders of epiploic foramen
liver
CVC
pancreas
T/F: intussception can happen in any part of GIT. How is it named?
T. Named by where it’s coming from and where it’s going.
most common intussception
jejuno-jejunal
Umbilical Hernia (Richter’s Hernia)
piece of colon gets stuck within umbilical ring but
-limited to foals
