Ventricular Septal Defect Closure
Ventricular septum defect (VSD) is a type of inherited disorders of non-sianotik. The disorder is caused by a defect / hole located in the septum / ventricular septum. Depending on location, this hole is located on the membrane of the septum, in the muscular septum or the septum near the aorta or pulmonary artery. During ventricular contraction, or systole, some of the blood from the left ventricle leaks into the right ventricle, passes through the lungs and reenters the left ventricle via the pulmonary veins and left atrium. This has two net effects. First, the circuitous refluxing of blood causes volume overload on the left ventricle. Second, because the left ventricle normally has a much higher systolic pressure (~120 mm Hg) than the right ventricle (~20 mm Hg), the leakage of blood into the right ventricle therefore elevates right ventricular pressure and volume, causing pulmonary hypertension with its associated symptoms. In serious cases, the pulmonary arterial pressure can reach