Unconscious overdose and cardiac arrest at Heidelberg Ave Heard on: St. Louis County Fire and EMS - South 00:24 00:00 Okay, 1614 , semi for redirect for cardiac arrest overdose. 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 Okay, 1614 , semi for redirect for cardiac arrest overdose. 00:09 1617, unconscious overdose. 00:12 Echo response. 00:14 (number withheld) Heidelberg Avenue. 00:17 Cross street is Morgan Ford Road. 00:19 1614 and 1617, respond on South Main. 2026-10-07 00:41 UTC Medical Emergency Heidelberg Ave, St. Louis, MO 63123 View on map