They are great until they aren't. Family member had one inserted. It collapsed about 20 minutes before discharge from hospital. They threw someone else off the table already in procedure to correct the issue in an emergency situation. Killed the lower third of heart muscle. Had the stent collapsed 20 minutes later, the outcome would have been fatal.

They can collapse and fail, it's not common, does happen.

Good luck with the procedure and hope the outcome is successful.