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[[Impaction, Colonic - Horse]]
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[[Colic, Gastric Causes]]
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====Small Intestine====
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=====[[Spasmodic Colic]]=====
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Spasmodic colic accounts for a large proportion of colic cases seen in first-opinion practice, however, little is known about its causes.  It generally produces a mild colic, due to increased [[peristaltis|peristaltic]] activity in the gastro-intestinal tract.  Cases are usually easily resolved by treating with a [[spasmolytic]] such as [[Buscopan]], and a mild [[analgesic]] such as [[phenylbutazone]].
   
=====[[Grass Sickness]]=====
 
=====[[Grass Sickness]]=====
Equine grass sickness, or equine [[dysautonomia]] causes a paralysis of the gastro-intestinal tract, by disruption of the [[autonomic nervous system]].  This leads to a pooling of ingesta throughout all parts of the gastro-intestinal tract.  The condition may occur acutely, or progress chronically over several weeks, but all cases will eventually die.  A definitive diagnosis is obtained by taking an ileal [[biopsy]], and inspecting the intrinsic [[myenteric plexus]].  There is no effective treatment, although in the short to medium term, horses can be successfully managed by informed and attentive owners.
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====Caecum====
 
====Caecum====
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