Difference between revisions of "Volvulus, Intestinal"
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m (Text replace - "[[Small Intestine - Anatomy & Physiology|" to "[[Small Intestine Overview - Anatomy & Physiology|") |
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* A twist about the long axis of the gut. | * A twist about the long axis of the gut. | ||
| − | * Generally in the [[Small Intestine - Anatomy & Physiology|small intestine]]. | + | * Generally in the [[Small Intestine Overview - Anatomy & Physiology|small intestine]]. |
* Intense congestion | * Intense congestion | ||
** Often almost black. | ** Often almost black. | ||
| Line 16: | Line 16: | ||
* Bowel becomes hypoxic.[[Image:Large_colon_torsion_horse.jpg|thumb|right|150px|Torsion of the large colon in the horse (Courtesy of Elspeth Milne)]] | * 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. | ** 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. | + | * In piglets may see whole of [[Small Intestine Overview - Anatomy & Physiology|small intestine]] twisted around root of mesentery. |
** Very little can be done to resolve this** Produces rapid death[[Category:Intestine_-_Physical_Disturbances]] | ** Very little can be done to resolve this** Produces rapid death[[Category:Intestine_-_Physical_Disturbances]] | ||
[[Category:To_Do_-_Clinical]] | [[Category:To_Do_-_Clinical]] | ||
Latest revision as of 12:59, 7 September 2010
- A twist about the long axis of the gut.
- Generally in the 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.
- Venous return is first shut off, but the arterial supply remains.
- Bowel becomes hypoxic.
- Toxic material and bacteria pass through the anoxic wall of bowel.
- In piglets may see whole of small intestine twisted around root of mesentery.
- Very little can be done to resolve this** Produces rapid death
