"That's where over the last 20 years, the argument or the debate or the judgment call is," he said. "Is it practical? Is it possible? ... Every time there's a tragedy, this comes up. But even if we did an EKG or an echo on every individual playing sports, we would still not identify every single cardiac death that has occurred in athletic competition."
Those questions, along with a new test for Marfan's syndrome (another cause of sudden death) and more advanced cardiovascular testing, "have all done a pretty good job," said Dr. Vito Perriello, chairman of the sports medicine advisory committee of the National Federation of State High School Associations.