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| + | #REDIRECT[[Ascarid Impaction - Horse]] |
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| − | ==Signalment==
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| − | Foals younger than 6 months on a poor worming schedule and with a heavy parasite burden. Recent history of being wormed with a product that causes sudden ascarid death.
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| − | ==Aetiology==
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| − | Products that cause sudden death of ascarids, particularly ''Parascaris equorum'' within the small intestine. Adult ascarids are large and thus readily cause small intestinal impaction. Suspected products include(37):
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| − | *Organophosphates
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| − | *Ivermectin
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| − | *Pyrantel pamoate
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| − | ==Clinical Signs==
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| − | *Acute onset colic after administration of anthelmintic (onset varies with degree of obstruction (37))
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| − | *Signs compatible with small intestinal obtruction
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| − | **Nasogastric reflux (occasionally dead parasites are seen in reflux)
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| − | ==Diagnosis==
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| − | *History
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| − | *Clinical signs referable to smal intestinal obstruction
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| − | *Abdominal imaging (radiography and ultrasonography) may demonstrate multiple loops of distended small intestine, but imagin is not required if the clinical presentation indicates immediate surgery.
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| − | ==Prognosis==
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| − | ==Treatment==
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| − | *[[Colic, Medical Treatment|'''Medical treatment:''']] immediate treatment of hypovolaemic shock resulting from sequestration of fluid in small intestine
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| − | *'''Surgical treatment:''' enterotomy made over the intraluminal impaction and removal of ascarids
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| − | ==Prognosis==
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| − | Fair in cases that are rapidly treated but poor in foals with evidence of hypovolaemia and septic shock. In a recent study, long term survival of 25 affected horses was 33%(37).
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| − | [[Category:To_Do_-_Nina]]
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