Changes

The severity and speed of onset of clinical signs is determined by the level of the obstruction. Proximal obstructions will progress more rapidly than distal ones.

The severity and speed of onset of clinical signs is determined by the level of the obstruction. Proximal obstructions will progress more rapidly than distal ones.

[[Nasogastric intubation in the Horse|'''Passage of a stomach tube''']] will produce nasogastric reflux depending on the site of obstruction and its duration; for a proximal obstruction fluid will build up in the stomach after approximately 3-6 hours, and for a distal obstruction, after 12 hours.   

[[Nasogastric intubation in the horse|'''Passage of a stomach tube''']] will produce nasogastric reflux depending on the site of obstruction and its duration; for a proximal obstruction fluid will build up in the stomach after approximately 3-6 hours, and for a distal obstruction, after 12 hours.   

'''Gut sounds''' will decrease as the small intestine becomes distended and atonic.  

'''Gut sounds''' will decrease as the small intestine becomes distended and atonic.  

===Ultrasound===

===Ultrasound===

[[Colic Diagnosis -Abdominal Ultrasound|Abdominal ultrasound]] reveals distended loops of small intestine which are frequently immotile.

[[Colic Diagnosis - Abdominal Ultrasound|Abdominal ultrasound]] reveals distended loops of small intestine which are frequently immotile.

==Treatment==

==Treatment==