pediatrics
Atrioventricular Septal Defect
Partial AV septal defect
A partial AV septal defect consists of An ostium primum atrial septal defect Partitioning of the common AV valve into 2 separate AV orifices, resulting in a so-called cleft in the mitral valve (left AV orifice) The ventricular septum is intact. Hemodynamic abnormalities are similar to those of Atrial Septal Defect (ASD) (eg, left-to-right shunt at the atrial level, enlarged right heart chambers, increased pulmonary blood flow) with the additional finding of variable degrees of AV valve regurgitation. 