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Category:Cardiovascular System - Developmental Pathology (view source)

Revision as of 15:51, 11 June 2010

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==Great Vessels==
 
==Great Vessels==
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===Vascular Ring Anomaly===
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===[[Vascular Ring Anomaly]]===
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Most commonly found in dogs and cats.  Acyanotic; clinical signs due to constriction of the [[Oesophagus - Anatomy & Physiology|oesophagus]]:
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*Regurgiation of food, usually noticed at weaning.
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*Aspiration pneumonia.
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====Persistent Right Aortic Arch====
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Most common vascular ring anomaly, increased incidence in GSDs, and Irish setters.  vascular ring forms between the ductus arteriosus/ligamentum arteriosum and the persistent right aorta.
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[[Megaoesophagus]] is seen cranial to the constriction.
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Other causes include:
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[[Image:dextra-aorta.jpg|right|thumb|200px|<small><center>'''Dextra-aorta'''. Courtesy of A. Jefferies</center></small>]]
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====Double aortic arch====
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====Anomalous subclavian arteries====
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Arise form the aortic arch rather than the brachiocephalic artery.
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''Diagnosis:''
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*Ventral deviation of the trachea and dilation of the oesophagus on radiology.
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*Barium swallow definitive.
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''Treatment:''
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*Surgical resection possible.
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*Dietary management usually sufficient to control regurgitation.
      
===Tetralogy of Fallot===
 
===Tetralogy of Fallot===
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