Dr. Stephen Malthouse Rules Out Commotio Cordis as the Cause of Damar Hamlin's Cardiac Arrest

Dr. Stephen Malthouse Rules Out Commotio Cordis as the Cause of Damar Hamlin's Cardiac Arrest • The shoulder pads make it so players "really have armor going down the front of their chest." • It is usually caused by a projectile. • Damar got up after the hit — then fell down.