UC San Diego medical student Brennan Marsh-Armstrong performs CPR on a test dummy at the UCSD School of Medicine Simulation Training Center on December 21, 2022. If someone you know stopped breathing, ...

BUFFALO, N.Y. – While sudden cardiac arrest in a child or adolescent is rare — about 20,000 cases occur each year in the U.S. — the survival rate when it happens outside of a hospital is estimated to ...