Author, Donkey, Bureaucrats, Administrators
53,803
edits
Changes
Created page with '* A twist about the long axis of the gut. * Generally in the small intestine. * Intense congestion ** Often almost black. * Mostly in y…'
* A twist about the long axis of the gut.
* Generally in the [[Small Intestine - Anatomy & Physiology|small intestine]].
* Intense congestion
** Often almost black.
* Mostly in young animals
** Especially calves and piglets
** Occasionally sheep and dogs.
** Occasionally in greater mesentery of horse.
====Pathogenesis====
* Loop of bowel twists through 180 degrees around mesentery to produce obstruction of lumen.
* Proximal the the obstruction, the bowel becomes rapidly distended.
** Venous return is first shut off, but the arterial supply remains.
*** Bowel becomes engorged with blood.
** Produces rapid death.
* Bowel becomes hypoxic.[[Image:Large_colon_torsion_horse.jpg|thumb|right|150px|Torsion of the large colon in the horse (Courtesy of Elspeth Milne)]]
** Toxic material and bacteria pass through the anoxic wall of bowel.
* In piglets may see whole of [[Small Intestine - Anatomy & Physiology|small intestine]] twisted around root of mesentery.
** Very little can be done to resolve this** Produces rapid death[[Category:Intestine_-_Physical_Disturbances]]
* Generally in the [[Small Intestine - Anatomy & Physiology|small intestine]].
* Intense congestion
** Often almost black.
* Mostly in young animals
** Especially calves and piglets
** Occasionally sheep and dogs.
** Occasionally in greater mesentery of horse.
====Pathogenesis====
* Loop of bowel twists through 180 degrees around mesentery to produce obstruction of lumen.
* Proximal the the obstruction, the bowel becomes rapidly distended.
** Venous return is first shut off, but the arterial supply remains.
*** Bowel becomes engorged with blood.
** Produces rapid death.
* Bowel becomes hypoxic.[[Image:Large_colon_torsion_horse.jpg|thumb|right|150px|Torsion of the large colon in the horse (Courtesy of Elspeth Milne)]]
** Toxic material and bacteria pass through the anoxic wall of bowel.
* In piglets may see whole of [[Small Intestine - Anatomy & Physiology|small intestine]] twisted around root of mesentery.
** Very little can be done to resolve this** Produces rapid death[[Category:Intestine_-_Physical_Disturbances]]