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An ostium primum ASD + Inlet VSD = AV canal defect !

Posted Nov 04 2010 10:05am

A classical echo of  a common AV canal .


Common AV canal .

Note  the free floating common AV leaflet



With all chambers interconnected it is a free for all circulation . The blood  seems to get mixed at the level of common AV orifice . Even though one expects severe cyanosis in common AV canal , the intensity of which is primarily determined

Common AV canal with free for all shunting .


the net blood flow to lungs which is dictated by  the pulmonary vascular resistance or the RVOT obstruction. This patient had no RVOT obstruction   but had  severe  pulmonary arterial hypertension.  In spite of raised PVR ,  some amount of volume over load of lungs  occur.

How to assess the  operability ?

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