facts_n_science on Instagram: "This footage showcases the LUCAS 3, an automated CPR device revolutionizing emergency cardiac care. Unlike manual compressions that vary under fatigue, this mechanical system delivers perfectly consistent chest compressions at the exact depth (5-6 cm) and rate (100-120/min) recommended by the American Heart Association. Most people after seeing this will worry if there may be excessive rib fracture as it is common during this procedure, LUCAS has sensors that preve