Person possible cardiac arrest near South Marion Avenue Heard on: Montgomery PA Multi-Dispatch Group Calls 00:05 00:00 Three hundred and 13 cardiac arrest, (number withheld) South Marion Avenue. Transcript This transcript is auto-generated from live dispatch audio and may be incomplete or inaccurate. It is not an official report and may change. 00:00 Three hundred and 13 cardiac arrest, (number withheld) South Marion Avenue. 00:02 Three hundred and 13 possible cardiac arrest, (number withheld) South Marion Avenue. 5/13/2026 09:27 AM Medical Emergency S Merion Ave, Bryn Mawr, PA 19010 View on map