Mount Sinai Medical Center, Miami Beach’s only hospital and emergency room, was just ranked top-20 in the nation and #1 in Florida for heart attack survival rates, according to the Centers for Medicare and Medicaid Services (CMS). The hospital routinely runs emergency drills with the city, and on Friday they gave a rare look behind the scenes at what happens when a heart attack patient arrives at the Emergency Department fighting for their life. Video by Emily Michot / Miami Herald staff