24-year-old Stan Larkin has become the first person in Michigan to walk out of a hospital with an artificial heart. After blacking out during a basketball game at age 16, Larkin was diagnosed with arrhythmogenic right ventricular dysplasia (ARVD), a heart condition that can cause sudden cardiac arrest. For the last, few years, Larkin was forced to depend upon an implantable defibrillator to deliver electrical impulses to keep his heart beating. Referred to as “Big Blue,” the 418-pound device is hardly portable and often requires patients to stay in the hospital’s intensive care unit until a donor heart is found. That is, until the development of a smaller, portable device.