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Disorders of Equine Esophagus: Esophageal Obstruction or "Choke"…
Disorders of Equine Esophagus: Esophageal Obstruction or "Choke"
acute
secondary
foreign body
stricture
diverticula
neoplasia
abscess
cysts
motility disorders
meaesopahgus
primary impaction of feed/bedding
causes dysphagia
dental abnormalities
bolting feed
dehydration
reduced saliva
certain feeds
beet pulp
equine senior
coarse hay
post-sedation
chronic
acute episode that fails to resolve
recurrent acute episodes
slow, insidious onset
neurologic
sites
cranial cervical
thoracic inlet
cardiac region
diaphragm
CS
anxious
gagging
coughing
nasa discharge
stretching neck
forceful swallowing
everting 3rd eyelid
swelling/tenderness at obstruction site
treatment
sometimes resolves spontaneously
complications increase the longer the obstruction in present
treat as an emergency
prep
they need to relax with head down
drainage
prevents aspiration pneumonia
tranquilizers/sedatives
oxytocin
relax striated mm
buscopan
relaxes sm
gentle lavage w/ nasogastric tube
+/- lidocaine
:forbidden: mineral oil
if successfully resolved
pass a second time
perform endoscopy w/n 24hrs
if unresolved
refer
aftercare
if uncomplicated
NSAIDs
flunixin
phenylbutazone
q12hr 2-3d
hold feed for 12-24hr
water good
slurry
short grazing
if complicated
i.e.
erosions on endoscopy
obstructed for 12+ hrs
hold feed for 24-48hrs
IV or gradually introduce water
eventually slury
15 hand grazing
muzzle between feeds
NSAIDs
broad spectrum abx
sucralfate
complications
aspiration pneumonia
esophageal erosins
dehydration
e- abnomalities
stricture formation
esophageal dilation
esophageal rupture
follow-up
rescope at 2-4w if esophageal injury was present
address dental issues
identify feed or other cause
long-term
maintain annual dental care
change feeding strategy
rocks in feed pan
change herd situation
soft grassy hay
slow feeders
:forbidden: long stem hay
use soaked hay pellets
soaked complete feeed
grazing is good