03/23/2026
Your patient is 17, ambulatory, and talking. She took "a handful" of her mom's heart pills an hour ago. Vitals are soft, but she looks fine. Do you really need that 12-lead?
You do. Here's why.
This is flecainide. A sodium channel blocker with a 22.5% overdose mortality rate and a half-life of roughly 13 hours. It is not dialyzable. Once the cascade starts, your options narrow fast.
The ingestion was massive: approximately 9 grams across 180 tablets.
On initial EMS contact:
โHR 120, trending to 130
โBP 96/60, dropping to 89/54
โAmbulatory, conversational, no ECG obtained
Seventy minutes later: seizure, cardiac arrest, wide complex tachycardia.
After ROSC, the picture unraveled quickly:
๐ Recurrent VT and refractory hypotension
๐ Repeated defibrillation, sodium bicarbonate, lipid emulsion
๐ VA-ECMO initiated roughly 9 hours post-ingestion
๐ Five days on ECMO. Discharged neurologically intact on day 13.
The miss was the ECG. A 12-lead on initial contact could have revealed early QRS widening and changed every decision downstream: medical control activation, destination selection, and transport urgency.
Cardiotoxic ingestions don't announce themselves with dramatic presentations. They buy time with stable-looking vitals, then take it all back at once.
If the history says antiarrhythmic overdose, treat the patient you're about to have, not the one standing in front of you.
When is the last time your service ran a toxicology-driven transport decision drill?
๐ Read the full study:https://media.handtevy.com/website/Under-Recognized-Toxicity-of-Flecainide-Overdose.pdf
