There are multiple definitions:

1. bicuspid aortic valves(English)

   • due to the fusion of two cusps out of three, it usually includes two unequal cusps and a central raphe. The incidence of normally functioning bicuspid aortic valves is 0.6% to 0.9%
   • TAV, CCF
   • Cardiology
   • https://doi.org…6/heart.83.1.81
   • https://doi.org…phys.2018.01921

2. balloon aortic valvotomy(English)

   • Cardiology