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Transcathetsr aortic valvuloplasty (TAV) is a well-established treatment modality for congenital aortic valve stenosis. However during dilation, inadvertent balloon movement (due to the contractile force of the left ventricle) can increase risk of unnecessary trauma to the aortic valve apparatus resulting in aortic insufficiency (AI). A new technique was developed to stabilize balloon position dudng dilation. Standard transfemorel retrograde techniques were used for TAV. A pacing catheter was inserted into the right ventricle (RV) apex and just pdor to balloon inflation, the heart was paced at a faster rate in order to decrease the stroke volume and left ventricle (LV) systolic pressure. The lower LV stroke volume and systolic pressure result in a more stable balloon position. Balloon inflation was carried out in the usual manner and following balloon deflation, RV pacing was discontinued …