Organophosphate Poisoning & Treatment | Pharmacology #medicaleducation #neetpg #mbbs - Video

### ☠️ Organophosphate Poisoning & Treatment | Pharmacology

???? SLUDGE, DUMBBELS & The Life-Saving Antidotes!

Organophosphate poisoning is a medical emergency caused by inhibition of acetylcholinesterase, resulting in excessive acetylcholine accumulation at muscarinic, nicotinic, and central nervous system receptors.

Common sources include insecticides such as malathion, chlorpyrifos, and parathion.

### ???? Mechanism of Toxicity

Organophosphates inhibit acetylcholinesterase → Acetylcholine accumulates at synapses → Excessive cholinergic stimulation.

⚠️ Severe poisoning can cause respiratory failure due to bronchial secretions, bronchospasm, and respiratory muscle weakness.

### ???? Classic Clinical Features

Muscarinic effects — SLUDGE

* S — Salivation

* L — Lacrimation

* U — Urination

* D — Defecation

* G — Gastrointestinal cramps

* E — Emesis

Additional findings:

* Miosis (pinpoint pupils)

* Bradycardia

* Bronchorrhea and bronchospasm

* Excessive sweating

Nicotinic effects

* Muscle fasciculations

* Muscle weakness

* Paralysis

CNS effects

* Confusion

* Seizures

* Coma

### ???? Treatment: The Antidote Duo

1\. ATROPINE — Muscarinic antagonist

* Blocks muscarinic acetylcholine receptors.

* Reduces bronchial secretions and bronchospasm.

* Treats bradycardia and other muscarinic manifestations.

* Repeated IV doses are titrated rapidly to clinical response.

???? Treatment endpoint: Clear chest with reduced bronchial secretions and improved oxygenation—not normalization of pupil size.

2\. PRALIDOXIME (2-PAM) — Acetylcholinesterase reactivator

* Reactivates inhibited acetylcholinesterase before enzyme ageing.

* Helps reverse neuromuscular weakness.

* Administer early in appropriate organophosphate poisoning, alongside atropine.

3\. DIAZEPAM

\- Used for seizures and severe agitation when indicated.

### ???? Emergency Management

* Secure airway, breathing, and circulation.

* Provide oxygen and ventilatory support when required.

* Protect healthcare workers from secondary contamination.

* Remove contaminated clothing and wash exposed skin thoroughly.

* Administer atropine promptly and titrate to clinical response.

* Give pralidoxime when indicated.

* Monitor respiratory function and recurrent cholinergic symptoms.

### ⭐ NEET PG / INICET High-Yield Pearls

???? Mechanism: Acetylcholinesterase inhibition.

???? Antidote for muscarinic manifestations: Atropine.

???? Enzyme reactivator: Pralidoxime.

???? Pinpoint pupils + excessive secretions + fasciculations: Think organophosphate poisoning.

???? Major cause of death: Respiratory failure.

???? Intermediate syndrome: Delayed respiratory muscle weakness can occur after initial stabilization.

???? Clinical Reminder: Suspected organophosphate poisoning requires immediate emergency medical care. Do not attempt home treatment or induce vomiting.

???? Save this post for your Pharmacology & Emergency Medicine revision!

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