Figure 3: The interrogation of aortic valve using 2D echocardiograph with continuous wave Doppler in long axis view with a swipe to base to focuses aortic valve. The peak gradient across aortic valve is less than 30 mmHg without any aortic regurgitation after 1 month of percutaneous aortic valve dilatation. The peak gradient across aortic valve was 75-80 mmHg prior to the procedure