 Further angioplasty was then performed utilizing an ultra-thin SDS 8 x 3 cm balloon catheter inflated to 19 atmospheres pressure with complete disappearance of a distinct proximal waist. 
Further angioplasty was then performed utilizing an ultra - thin SDS 8 x 3 cm balloon catheter inflated to 19 atmospheres pressure with complete disappearance of a distinct proximal waist .