Changes

Also known as: '''''Colic — Impaction — Simple Obstruction — Descending Colon Simple Obstruction — Descending Colon Obstruction — Descending Colon Impaction — Descending Colon Mechanical Obstruction — Small Colon Obstruction — Small Colon Simple Obstruction — Small Colon Mechanical Obstruction

| Also known as:

|'''Colic<br>

'''Impaction<br>

'''Simple Obstruction<br>

'''Descending Colon Simple Obstruction<br>

'''Descending Colon Obstruction<br>

'''Descending Colon Impaction<br>

'''Descending Colon Mechanical Obstruction<br>

'''Small Colon Obstruction<br>

'''Small Colon Simple Obstruction<br>

'''Small Colon Mechanical Obstruction'''

 

==Description==

==Description==

Different from other types of impaction in predispositions and clinical appearance(BLiks)

Different from other types of impaction in predispositions and clinical appearance(BLiks)

Impaction of the descending colon is seen in ponies, miniature horses, and adult horses with limited access to drinking water or with other causes of intestinal stasis. Most recently, the condition has been associated with salmonellosis, although a cause and effect relationship has not been proved. Pain may be severe if the obstruction is complete. In such cases, tympany of the colon occurs secondarily, and ileus results. The diagnosis is made in adult horses by palpating the obstructing mass in the ventral portion of the abdomen on rectal examination. Foreign body obstruction of the descending colon must be considered if the horse is <3 yr old; the offending material may be rubber fencing, nylon fibers from halters or lead shanks, hay net, or feed sacks. Horses with impactions may be treated medically with analgesics, IV fluids, and gentle enemas. Often, however, surgery is required to evacuate the colon due to severity of pain and gas distention.

 

 

Impaction of the descending colon is seen in ponies, miniature horses, and adult horses with limited access to drinking water or with other causes of intestinal stasis(Merck).

==Aetiology==

==Aetiology==

Key risk factor is diarrhoea(117 in Bliks).  The oedema of the colonic mucosa associated with pro-infammatory causes of diarrhoeal disease that is usually noted in the ascendng colon but may extend into the transverse and small colons.  Once diarrhoeal disease is initiated, large volumes of ingesta are rapidly expelled from the ascending colon into the small colon, which has a far smaller diameter, especialyl if it is oedematous.  This may result in the intial appearance of diarrhoea, followed by intermittent episodes fo colic that may be explained by impaction.  Horses should be closely observed for impaction even if dirrhoea is present.  Post-diarrhoeal disease is not the only form of small colon impaction.  These impactions can be formed as simple collections of ingesta or in response to luminal narrowing.

Key risk factor is diarrhoea(Fredercio, 117 in Bliks).  The oedema of the colonic mucosa associated with pro-infammatory causes of diarrhoeal disease that is usually noted in the ascendng colon but may extend into the transverse and small colons.  Once diarrhoeal disease is initiated, large volumes of ingesta are rapidly expelled from the ascending colon into the small colon, which has a far smaller diameter, especialyl if it is oedematous.  This may result in the intial appearance of diarrhoea, followed by intermittent episodes fo colic that may be explained by impaction.  Horses should be closely observed for impaction even if dirrhoea is present.  Post-diarrhoeal disease is not the only form of small colon impaction.  These impactions can be formed as simple collections of ingesta or in response to luminal narrowing.

 

 

 

==Clinical Signs==

==Clinical Signs==

==Diagnosis==

==Diagnosis==

Other parameters that are typically elpful for assessing the severity of colic such as heart rate, were not predictive of obstruction in horses with small colon impaction(117).  Refractory colic is less pronounced in this disease.

Other parameters that are typically elpful for assessing the severity of colic such as heart rate, were not predictive of obstruction in horses with small colon impaction(117).  Refractory colic is less pronounced in this disease.

==Treatment==

==Treatment==

Horses may be treated [[Colic, Medical Treatment|medically]] during the ealry stages with fluids, laxatives and analgesics.  The key clinical sign that idnicates the need for surgery is abdominal distension associated with distension of the large colon.

Horses may be treated [[Colic, Medical Treatment|medically]] during the ealry stages with fluids, laxatives and analgesics.  The key clinical sign that idnicates the need for surgery is abdominal distension associated with distension of the large colon.(Frederico)

[[Category:Medical_Colic_in_the_Horse]]

[[Category:Medical_Colic_in_the_Horse]]

[[Category:Surgical_Colic_in_the_Horse]]

[[Category:Surgical_Colic_in_the_Horse]]

[[Category:To_Do_-_Nina]]

[[Category:To_Do_-_Alimentary]][[Category:To Do - Major]]

[[Category:Impaction - Horse]]