Deformation and stenosis of the sinus-SuperFlex-DS stent after ductal stenting for the hybrid stage 1 procedure.

We present five cases of sinus-SuperFlex-DS stent stenosis during early follow up that resulted in inadequate ductal patency and required urgent re-stenting with a balloon-expandable stent. This causes concern that these stents lack sufficient radial force against ductal constriction and if used need to be kept under close scrutiny.