AV canal connects the atria to the ventricles. At four to five weeks of gestation, the superior and inferior<unk><unk> s of the common AV canal fuse. Results in the formation of the mitral and tricuspid valve and the AV septum. Any failure of fusion results in<unk>  of<unk><unk>  defects depends upon level of left to right shunting and degree of shunting. Incompetent AV valves in<unk><unk>  defect results in regurgitation. There is a strong association between AV canal defects and Down syndrome
Endocardial cushion defect pathophysiology
Levo-transposition of the great arteries pathophysiology
Ventricular septal defect pathophysiology
Tricuspid atresia pathophysiology
Atrial septal defect pathophysiology
Right ventricular outflow tract obstruction pathophysiology
Partial anomalous pulmonary venous connection pathophysiology
Total anomalous pulmonary venous connection pathophysiology