Son Uses Grandfather’s Heartbeats to Help Save Mom’s Life

Dr. Daniel Mason, who lectured and practiced for 50 years at Philadelphia’s Hahnemann Hospital, had produced a three-CD set of digitized heart sounds and murmurs, some extremely rare, to allow medical students to learn the nuances of detecting heart disease. His grandson, Andrew Josephson, used those recordings to create an app, “Listening to the Heart,” which identifies heart abnormalities.