Dr. Sheldon Litwin and Jimmy McMillan (IMAGE) Medical University of South Carolina Caption Dr. Sheldon Litwin talks with HFpEF patient Jimmy McMillan, who's helping Litwin test whether a device can help people with his type of heart failure. Credit Anne Thompson Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.