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Abdominal wall defects are a type of congenital defect that allows the stomach, the intestines, or other organs to protrude through an unusual opening that forms on the abdomen. [ 1 ] [ 2 ] During the development of the fetus, many unexpected changes occur inside the womb.
A ventricular septal defect is when this lower wall—the ventricular septum—has a gap in it after development. The septum is formed during development as this muscular ridge of tissue grows upward from the apex, or the tip, and then fuses with a thinner membranous region coming down from the endocardial cushions.
[citation needed] Tethering the underlying ventricular wall is the most common for the posterior and septal leaflets, and sail-like anterior leaflets may be tethered to the RV free wall also. [citation needed] ECGs recorded during sinus rhythm and AVRT in a 9-year-old girl with Ebstein's anomaly and a Mahaim accessory pathway.
A ventricular septal defect (VSD) is a defect in the ventricular 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 ventricular septum, creating one common ventricle. The ventricular septum consists of an inferior muscular and superior membranous ...
It is a very specific combination of 3 defects: 1) Atrial Septal Defect (ASD), a hole in the wall between the right and left atria; 2) Ventricular Septal Defect (VSD), a hole in the wall between the right and left ventricles; and 3) Abnormalities of the mitral and/or tricuspid valves. [1] [2]
Sternal defects too have a range of presentations, from absence of the xiphoid process to shortened or cleft sternum. If the sternal defect is large enough, the neonate may have ectopia cordis, in which the heart is located outside of the thorax. [2] Many congenital heart malformations have been described in conjunction with pentalogy of Cantrell.
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Pulmonary atresia with ventricular septal defect (PA-VSD) is identified by underdevelopment of the right ventricle. The Ventricular Septal Defect (VSD) is a second opening in the ventricular wall, which provides a way out for blood in the right ventricle. When this second opening does not exist, very little blood goes to the right ventricle ...