Case challenge · Emergency / Toxicology · teaching

Anticholinergic (Antimuscarinic) Toxicity — Pathway · case challenge

Given a case, work through the care pathway step by step; the tool checks each choice and scores you. Decisions and basis are taken from this site's reviewed care pathways.

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Case #1Emergency / Toxicology

📋 Case data

Toxidrome severity / wide QRSMild–moderate

Data is taken from this pathway's reviewed node text. Work through the pathway step by step.

Step 1 / 1 · Toxidrome severity / wide QRS

Anticholinergic toxidrome — severe delirium / wide QRS?

💡 Antagonism of M receptors (antihistamines/TCAs/antipsychotics/atropine-scopolamine/jimsonweed, etc.). Mnemonic: 'hot as a hare (anhidrotic hyperthermia), dry as a bone, red as a beet, blind as a bat (mydriasis), mad as a hatter (delirium/hallucinations/picking), full as a flask (urinary retention)' + tachycardia, reduced bowel sounds. Dry skin + reduced bowel sounds distinguish it from sympathomimetic toxicity. Diphenhydramine/TCAs cause wide QRS from sodium-channel blockade (check ECG).

For teaching. Decisions and their basis are taken from this site's reviewed care pathways; for licensed clinicians/trainees, this does not replace clinical judgment or local protocols.