Effect of procedural refinement of transfemoral transcatheter aortic valve implantation on outcomes and costs: a single-centre retrospective study.

Objectives: To determine the effect of introducing several procedural refinements of transfemoral transcatheter aortic valve implantation (TAVI) on clinical outcomes and costs.

Design: Retrospective analysis comparing two consecutive 1-year periods, before and after the introduction of procedural refinements.

Setting: Tertiary hospital aortic valve programme.