Figure 4: (a) Echocardiogram of the patient #1 in apical four chamber view showing aneurysmally dilated right atrium [yellow arrow] and the right ventricle.(b) Subcostal short axis view showing large atrial septal defect with very thin and floppy Inferior margin [white arrow].(c) Transesophageal echocardiogram showing a large atrial septal defect and very thin and flimsy inferior margin [white arrow].(d) A balloon was inflated across the atrial septal defect and transesophageal echocardiogram was done to confirm the position of the balloon as well as occlusion of the defect.(e) Balloon assisted device closure of a large atrial septal defect.(f) Post-device deployment echocardiogram showing good device position with no residual flow