A 16-year-old adolescent girl was referred to our tertiary care center for management of a failed aortic valve balloon dilatation procedure for congenital valvular aortic stenosis. The medical records revealed a residual peak-to-peak gradient of 80 mm Hg after 2 dilations with 16 x 6-mm Tyshak balloon (NuMed Inc.).
Keywords: aortic stenosis; aortography; aortoplasty; balloon dilation; supravalvular sortic stenosis.