This week's top stories in clinical cardiology:

1. Has radial access PCI been overhyped?
2. Hospital TAVR volume matters to patient survival.
3. Studies link TMAO to microbiome, reveal new heart disease target.
4. More chest compression–only CPR leads to increased survival rates.

You can contact the show by emailing us at podcasts@mdedge.com or you can follow MDedge Cardiology on Twitter at @MDedgeCardio.