الفهرس 
Atrial Septal DefectOnly 14 pages are availabe for public view
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Abstract
Atrial septal defects (ASDs) are the most common form of congenital heart disease diagnosed in adults, accounting for - of all congenital heart defects. of these defects, are of the secondum type .ASDs affect not only the right ventricle by volume over load due to left to right shunt , but also affect the left ventricle as a consequence of ventricular interdependence. ( ) The ideal ASD TTT should aim at both eliminating intra cardiac shunt and reverting the geometric changes caused by cardiac overload . The trans catheter ASD device closure became the gold standard treatment strategy for isolated secondum ASD with suitable anatomy , being a therapeutic option with fewer complications and faster hemodynamic adaption compared to surgery .The trans catheter ASD closure helps amelioration of left to right shunt as well as restoration of normal ventricular geometry and function . Though a significant num ber of patients with ASD remain asymptomatic until adult age , early diagnosis and treatment is crucial because of the potential complications such as pulmonary hypertension ,right sided heart failure and atrial arrhythmia. The aim of the present study was to evaluate the right ventricular remodeling via a thorough echo cardiographic evaluation of geometric and functional changes of the right ventricle before and after the transcatheter closure of secondum ASD and its impact on the left ventricular function.