Difference between revisions of "Foreign Bodies, Intestinal"

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* Foreign bodies of all types can be found in the intestines. 
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== Introduction ==
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* While some may pass through posing no problems, others can cause acute obstruction,
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* Quite common in dogs
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** Rare in other species - tend to lodge in the oesophagus or in one of the ruminant [[Ruminant Stomach - Anatomy & Physiology|stomachs]].)
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** Enteroliths can be seen in  horses greater than 4 years of age.
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*** Are stones consisting of magnesium ammonium phosphate around a central nidus (often a metallic foreign body)
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*** Typically lodge at the pelvic flexure or the transverse [[Colon - Anatomy & Physiology|colon]].
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* '''Clinical'''
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** Obstruction at pylorus produces repeated [[Control of Feeding - Anatomy & Physiology#The Vomit Reflex|vomiting]].
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** Obstrustion lower down gives less dramatic effect.
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*** Is still a problem if in the middle of the [[Small Intestine - Anatomy & Physiology|small intestine]]s.
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*** May be vague signs; some [[Control of Feeding - Anatomy & Physiology#The Vomit Reflex|vomiting]] and off food.
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* '''Diagnosis'''
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** May not show up well radiographically  (unless radio-opaque) for several days.
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*** May also be objects that are semi solid or soft,  e.g.
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**** String
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**** Plastic bags
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**** Stringy things, like pieces of material- particularly in puppies.
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** Make all of intestines have knotted appearance. 
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** May be seen in horses with baler twine.
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* '''Pathogenesis'''
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** Smooth, round objects, such as golf balls, lodge especially near the pylorus or lower down.
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** Occasionally in cattle (piece of rope or piece of tarpaulin) produces a tangled mass in [[Rumen - Anatomy & Physiology|rumen]].
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** Cause pressure necrosis and eventually perforation. 
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** Foreign bodies can also be chronic, remaining for long periods of time without causing disturbance.
  
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Foreign bodies of all types can be found in the intestines. While some may pass through posing no problems, others can cause acute obstruction. This is quite common in dogs, but rare in other species. Foreign bodies in other species such as ruminants tend to lodge in the oesophagus or in one of the ruminant stomachs. In horses, [[Enterolith - Horse|enteroliths]] can be seen in animals greater than 4 years of age and these can act as foreign bodies causing intestinal obstruction. Smooth, round objects, such as golf balls, lodge especially near the pylorus or lower down. Occasionally in cattle (piece of rope or piece of tarpaulin) produces a tangled mass in rumen which causes pressure necrosis and eventually perforation. Foreign bodies can also be chronic, remaining for long periods of time without causing disturbance.
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[[Category:Intestine - Mechanical Obstruction]]
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[[Category:To_Do_-_Clinical]]
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== Clinical Signs ==
 
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Obstruction at pylorus produces repeated [[Vomiting|vomiting]]. Obstruction lower down gives less dramatic effect. Vague signs of vomiting, weight loss and reluctance to eat may be present. In cats with linear foreign bodies wrapped around the tongue, excess salivation, bleeding and reluctance to eat may also occur.
 
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== Diagnosis  ==
 
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Foreign bodies may not show up well radiographically (unless radio-opaque) for several days. The foreign bodies may also be objects that are semi solid or soft e.g. string, plastic bags or material (particularly in puppies). The intestines may appear knotted and 'puckered' in appearance. This is especially seen in cats which swallow string and the peristaltic movements cause it to pass through the intestine, yet it is attached to the tongue. This can cause the intestine to tear and may lead to severe [[Peritonitis - Cats and Dogs|peritonitis]]. This can also be seen in horses which have ingested baler twine.
 
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== Treatment ==
 
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Surgical removal may be necessary if the foreign body cannot pass of its own accord. If the foreign body is in the large intestine then opening the intestines is not recommended due to bacteria infecting the abdominal cavity. If the object is able to pass through the small intestine then it should be able to pass through the large intestine.
 
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If peritonitis has occurred then abdominal lavage and intravenous and intra-abdominal antibiotics will be required as well as [[:Category:Fluid Therapy|fluid therapy]].
 
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== References ==
 
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Blood, D.C. and Studdert, V. P. (1999) '''Saunders Comprehensive Veterinary Dictionary''' (2nd Edition)'' Elsevier Science ''
 
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Ettinger, S.J. and Feldman, E. C. (2000) '''Textbook of Veterinary Internal Medicine Diseases of the Dog and Cat Volume 2 '''(Fifth Edition) ''W.B. Saunders Company''
 
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Fossum, T. W. et. al. (2007) '''Small Animal Surgery '''(Third Edition) ''Mosby Elsevier''
 
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Merck & Co (2008) '''The Merck Veterinary Manual''' (Eighth Edition) ''Merial''
 
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Radostits, O.M, Arundel, J.H, and Gay, C.C. (2000) '''Veterinary Medicine: a textbook of the diseases of cattle, sheep, pigs, goats and horses''''' Elsevier Health Sciences''
 
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Sturgess, K. (2003) '''Notes on Feline Internal Medicine '''''Blackwell Publishing''
 
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{{review}}
 
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{{OpenPages}}
 
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[[Category:Intestine_-_Mechanical_Obstruction]] [[Category:Intestinal Diseases - Cat]][[Category:Intestinal Diseases - Dog]][[Category:Small Intestinal Diseases - Horse]][[Category:Expert_Review]]
 

Revision as of 13:44, 6 September 2010

  • Foreign bodies of all types can be found in the intestines.
  • While some may pass through posing no problems, others can cause acute obstruction,
  • Quite common in dogs
    • Rare in other species - tend to lodge in the oesophagus or in one of the ruminant stomachs.)
    • Enteroliths can be seen in horses greater than 4 years of age.
      • Are stones consisting of magnesium ammonium phosphate around a central nidus (often a metallic foreign body)
      • Typically lodge at the pelvic flexure or the transverse colon.
  • Clinical
    • Obstruction at pylorus produces repeated vomiting.
    • Obstrustion lower down gives less dramatic effect.
  • Diagnosis
    • May not show up well radiographically (unless radio-opaque) for several days.
      • May also be objects that are semi solid or soft, e.g.
        • String
        • Plastic bags
        • Stringy things, like pieces of material- particularly in puppies.
    • Make all of intestines have knotted appearance.
    • May be seen in horses with baler twine.
  • Pathogenesis
    • Smooth, round objects, such as golf balls, lodge especially near the pylorus or lower down.
    • Occasionally in cattle (piece of rope or piece of tarpaulin) produces a tangled mass in rumen.
    • Cause pressure necrosis and eventually perforation.
    • Foreign bodies can also be chronic, remaining for long periods of time without causing disturbance.
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