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| ** Leads to vasoconstriction | | ** Leads to vasoconstriction |
| *** May occlude lumen and encourage thromboemboli. | | *** May occlude lumen and encourage thromboemboli. |
− | ** Can cause ischaemic necrosis of a segment of [[Small Intestine - Anatomy & Physiology|small intestine]] | + | ** Can cause ischaemic necrosis of a segment of [[Small Intestine Overview - Anatomy & Physiology|small intestine]] |
| ** Is less common now that [[Strongylus vulgaris|'''''Strongylus vulgaris''''']] infections are declining. | | ** Is less common now that [[Strongylus vulgaris|'''''Strongylus vulgaris''''']] infections are declining. |
| * E.g. '''equine''' [[Salmonellosis|'''salmonellosis''']]. | | * E.g. '''equine''' [[Salmonellosis|'''salmonellosis''']]. |
| [[Image:Infaction of the small bowel.jpg|thumb|right|150px|Infarction of the small bowel (Courtesy of Bristol BioMed Image Archive)]] | | [[Image:Infaction of the small bowel.jpg|thumb|right|150px|Infarction of the small bowel (Courtesy of Bristol BioMed Image Archive)]] |
| + | ==== Verminous endarteritis ==== |
| + | *Caused by larvae of [[Strongylus vulgaris|''S. vulgaris'']] within the cranial mesenteric artery |
| + | *Also called "verminous aneurism" (misnomer as aneurism = dilatation/thinning of blood vessel wall; also, aneurisms are rare) |
| + | *Wall of artery grossly thickened (organising thrombi, inflammatory responses) |
| + | *Can be detected on rectal palpation |
| + | *Many cases asymptomatic |
| + | *May get embolism → infarction of areas of intestinal wall → colic or chronic ulceration (note: generally good collateral circulation; therefore colic is not inevitable) |
| + | *Aberrant larvae may cause thrombosis in other arteries; e.g. iliac, cerebral, coronary |
| + | *Avermectin/milbemycins or fenbendazole are used to control migrating ''S. vulgaris'' larvae |
| + | |
| | | |
| ===Small Animals=== | | ===Small Animals=== |
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| * Similar to that caused by venous congestion. | | * Similar to that caused by venous congestion. |
| * See sharply delineated dark areas in bowel that are flaccid with loss of tone. | | * See sharply delineated dark areas in bowel that are flaccid with loss of tone. |
− | ** These become necrotic followed later by peritonitis.[[Category:Intestine_-_Vascular_Disturbances]] | + | ** These become necrotic followed later by peritonitis. |
− | [[Category:Dog]][[Category:Cat]] | + | |
| + | |
| + | [[Category:Intestine_-_Vascular_Disturbances]] |
| + | [[Category:Intestinal Diseases - Dog]][[Category:Vascular Diseases - Dog]][[Category:Intestinal Diseases - Cat]][[Category:Vascular Diseases - Cat]] |
| [[Category:To_Do_-_Clinical]] | | [[Category:To_Do_-_Clinical]] |
− | [[Category:Cardiovascular_Disorders_-_Horse]] | + | [[Category:Vascular Diseases - Horse]] |
− | [[Category:Small_Intestinal_Disorders_-_Horse]] | + | [[Category:Small Intestinal Diseases - Horse]] |
| + | [[Category:Cardiology Section]] |