Hayat Hassan Mohamed Abdelfattah Nassar <br/><br/>
Three dimensional echocardiography and doppler tissue imaging in children with atrial septal defects before and after device closure /  
 الموجات فوق الصوتيه ثلاثيه الابعاد و الدوبلكس للانسجه علي القلب في الاطفال ذوي الثقب بالحاجز الاذيني قبل و بعد الغلق بأجهزه القسطره التداخليه 
Hayat Hassan Mohamed Abdelfattah Nassar ; Supervised Mohamed Fawzan Shaltoot , Hala Mounir Agha , Sonia Elsaiedi 
 - Cairo :   Hayat Hassan Mohamed Abdelfattah Nassar ,   2014 
 - 258 P. :   charts , facsimiles ;   25cm 
<br/><br/>Thesis (Ph.D.) - Cairo University - Faculty of Medicine - Department of Pediatrics 
<br/><br/> Device closure of ASDs, leads to improvement of both RV and LV function (Diastolic volumes earlier than dimensions) as well as reduction of the RA/LA area ratio, while no change in EF and FS after the first year of follow up  The use of Tissue Doppler, 2D TTE and 3D TTE are essential to follow up the improvement in the right and left ventricular function. Atrial septal defect closure resulted in acute fall of velocities and time intervals on both RV and LV The TDI derived MPI can be used to assess the global right ventricular function in patients with ASD. Compared to the control group, the MPI was significantly higher in patients with ASD suggesting decreased right ventricular function. After transcatheter closure the MPI decreased markedly and the right ventricular function improved in patients with ASD  
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<br/><br/><label>Subjects--Index Terms: </label>Atrial Septal Defects  Device Closure  Three Dimensional Echocardiography