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===Clinical Signs===
 
===Clinical Signs===
 
====Simple obstruction====
 
====Simple obstruction====
*Vomiting ± diarrhoea
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*Vomiting; the further the obstruction is towards the mouth, the more frequent the vomiting is
*Depression and anorexia
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*Moribund or in septic shock; if part of the intestine becomes devitalised, resulting in septic peritonitis
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*Abdominal foreign body, mass or obstructive ileus may be palpable
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===Diagnostic Imaging===
 
===Diagnostic Imaging===
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====Radiography====
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The cause of the obstruction may be visible
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====Ultrasonography====
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Most of the time, this is a more sensitive technique in revealing the cause of the obstruction compared to radiography.  Dilation and thickening of the wall of the intestine may be visible.
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*Hall, E.J, Simpson, J.W. and Williams, D.A. (2005) '''BSAVA Manual of Canine and Feline Gastroenterology (2nd Edition)''' ''BSAVA''
 
*Hall, E.J, Simpson, J.W. and Williams, D.A. (2005) '''BSAVA Manual of Canine and Feline Gastroenterology (2nd Edition)''' ''BSAVA''
 
*Nelson, R.W. and Couto, C.G. (2009) '''Small Animal Internal Medicine (Fourth Edition)''' ''Mosby Elsevier''.
 
*Nelson, R.W. and Couto, C.G. (2009) '''Small Animal Internal Medicine (Fourth Edition)''' ''Mosby Elsevier''.
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