Bobby Z. speaks to the crowd during the “Official Prince Tribute-A Celebration of Life and Music,” concert at Xcel Energy Center on Oct. 13, 2016, in St. Paul, Minnesota. (Photo by Adam Bettcher/Getty Images) In September, Bobby Z. bid an emotional farewell to his former bandmate Prince at First Avenue, the legendary Minneapolis nightclub where…

Patients with persistent atrial fibrillation who are successfully treated with ablation may no longer need blood thinners, a new study shows. Nearly 3 million Americans deal with atrial fibrillation, or AFib — a quivering or irregular heartbeat that can cause complications like blood clots, stroke and heart failure. Catheter ablation, which destroys a small area…

A new, less invasive approach for replacing malfunctioning heart valves is now recommended for certain patients, and younger patients can now receive natural tissue valves instead of mechanical ones, according to new treatment guidelines. The recommendations released Wednesday by the American Heart Association and American College of Cardiology affect some of the estimated 5 million…