Upper Darby school officials said in May that Smart, 25, appeared to have died of a heart attack, meaning a blockage in an artery that cuts off the flow of oxygenated blood to the heart.
But a heart attack is just one of many conditions that can lead to a sudden cardiac death. The actual cause in this case is unclear, said James Garrow, a spokesperson for the Philadelphia Medical Examiner’s Office.
https://www.inquirer.com/health/broad-street-run-brian-smart-heart-20190919.html
By Tom Avril
The Collected Works of Jim Garrow 