Which of the following is not a feature of organophosphorous poisoning?
**Core Concept**
Organophosphorous poisoning is a type of cholinergic crisis caused by the inhibition of **acetylcholinesterase**, leading to an accumulation of **acetylcholine** in the synaptic cleft. This results in overstimulation of **muscarinic** and **nicotinic receptors**. The clinical presentation is characterized by a range of systemic effects.
**Why the Correct Answer is Right**
The correct answer choice is not provided, but generally, features of organophosphorous poisoning include **miosis**, **bradycardia**, **hypotension**, **bronchospasm**, and **increased salivation**. These symptoms occur due to the excess **acetylcholine** stimulating **muscarinic receptors**.
**Why Each Wrong Option is Incorrect**
**Option A:** (Not provided, but would be incorrect if it described a known feature of organophosphorous poisoning).
**Option B:** (Not provided, but would be incorrect if it described a known feature of organophosphorous poisoning).
**Option C:** (Not provided, but would be incorrect if it described a known feature of organophosphorous poisoning).
**Option D:** (Not provided, but would be incorrect if it described a known feature of organophosphorous poisoning).
**Clinical Pearl / High-Yield Fact**
A key feature to remember is that organophosphorous poisoning can lead to **respiratory failure** due to the combination of **bronchospasm** and **paralysis of the respiratory muscles**.
**Correct Answer:** D. Mydriasis