Airs Thursday, February 18, at 6 p.m. Tune in for Health Matters when Dr. Randall Brewer hosts a discussion on cardiac health with guests Dr. Robert Martin, cardiologist with Pierremont Cardiology in Shreveport, and Sherry Free, Team Leader of Cardiac Rehab at Christus Health Shreveport-Bossier, Your questions will be taken during the show at 800-552-8502 or via Twitter@rrrpublicradio.