Stomach Obstruction

• Several causes
  1. Foreign body/ impaction, e.g.
     • Stones
     • Hair/wool balls (trichobezoars)
     • Coarse feed in herbivores.
  2. Neurologic causes, e.g.
     • Dysautonomia (cat, horse)
     • End-stage liver disease (horse)
     • Vagal indigestion (cattle)
  3. Pyloric stenosis
     • Seen in the dog, foal, and sometimes in the cat
     • Congenital hypertrophy of the pyloric muscle causes delayed gastric emptying and persistent vomiting.
     • Can be acquired in the foal following healed ulcers.