Heart sounds of a<unk>  in a 14 year old girl. A<unk>  <unk>  is a defect in the<unk>  septum, the wall dividing the left and right ventricles of the heart. The extent of the opening may vary from pin size to complete absence of the<unk>  septum, creating one common ventricle. The<unk>  septum consists of an inferior muscular and superior membranous portion and is extensively innervated with conducting cardiomyocytes. The membranous portion, which is close to the atrioventricular node, is most commonly affected in adults and older children in the United States. It is also the type that will most commonly require surgical intervention, comprising over 80% of cases. Membranous<unk> s are more common than muscular<unk> s, and are the most common congenital cardiac anomaly.
Ventricular septal defect
Heart septal defect
Atrioventricular septal defect
Atrial septal defect
Aortopulmonary septal defect
Tricuspid atresia
Double aortic arch
Double inlet left ventricle