A classical echo of a common AV canal .
Common AV canal . http://www.drsvenkatesan.com
Note the free floating common AV leaflet
An ASD
A VSD
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 . http://www.drsvenkatesan.com
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 ?
Dr.S.Venkatesan MD 