Prosthesis–Patient Mismatch After Transcatheter Aortic Valve Implantation

This instructive paper includes three separate meta-analyses focusing on patient-prosthesis mismatch (PPM) after TAVR.  These meta-analyses revealed the following:

• The incidence of PPM after TAVR is 35% (moderate 27%, severe 8%).
• The incidence of PPM after TAVR is significantly less than that for SAVR, with an OR of 0.23.
• PPM after TAVR does not seem to impact survival at a mean follow-up interval ranging from 18 months to 4 years.