Difference between revisions of "Persistent Atrioventricular Canal"
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Revision as of 22:37, 9 February 2012
The persistent atrioventricular canal results from the failure of the superior and inferior cushions to fuse. Thus there is a single atrioventricular canal in which all four chambers may freely communicate. Because the cushions do not fuse the atrial and ventricular septa cannot fully form as they rely on the cushions to form the membranous portions of these septa.
The defect is most common in cats and pigs.