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  1. Videos
  2. Tricyclic overdose — read the QRS, not the level

Tricyclic overdose — read the QRS, not the level

Published
7 Sept 2026
Duration
16:14
Channel
MedVellum on YouTube

About this video

An empty bottle of mother’s amitriptyline. Unconscious, hot and dry, wide pupils — and a QRS of one hundred fifty. Looks anticholinergic; dies sodium-channel. This Atlas edition walks the classic exam emergency: the lethality ladder (dosulepin to SSRI), the three killers, the ECG as prognosis (QRS one hundred, one-sixty, and the tall R in aVR — the only independent predictor), sodium bicarbonate’s two engines with the seven-forty-five to seven-fifty-five target, the forbidden syringes (phenytoin, class one A and C, flumazenil, physostigmine), lipid rescue, and the six-hour rule that ends ever…

Playback loads from YouTube (privacy-enhanced mode) only after you click. Educational content only — not medical advice.