Organophosphate Toxicity · Pharmacology

Which antidote competitively blocks muscarinic receptors in organophosphate poisoning?

  1. Naloxone
  2. Atropine
  3. Pralidoxime
  4. Physostigmine
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Correct answer: Atropine

Atropine is a muscarinic antagonist that blocks acetylcholine at muscarinic receptors. It reduces secretions, bronchospasm, and bradycardia.

Difficulty: Medium Question 3 of 20

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