All are true about thiopentone except
**Core Concept**
Thiopentone is a **barbiturate** used for induction of anesthesia, acting on the **GABA_A receptor** to enhance inhibitory neurotransmission. It has a rapid onset and short duration of action due to its high lipophilicity.
**Why the Correct Answer is Right**
Since the correct answer is not provided, let's focus on the properties of thiopentone. Thiopentone induces anesthesia by potentiating the action of **GABA** (gamma-aminobutyric acid), the main inhibitory neurotransmitter in the brain, thereby reducing neuronal activity. Its rapid redistribution from the brain to other body tissues terminates its effect.
**Why Each Wrong Option is Incorrect**
**Option A:** Without the specific details of option A, we cannot directly address why it is incorrect.
**Option B:** Similarly, without specifics, option B's incorrectness cannot be detailed.
**Option C:** And option C cannot be discussed without its content.
**Option D:** Option D also lacks context to explain its incorrectness.
**Clinical Pearl / High-Yield Fact**
A key point to remember about thiopentone is its use in **status epilepticus** and for neuroprotection in cases of **cerebral edema** or **intracranial hypertension**, due to its ability to decrease cerebral metabolic rate and oxygen demand.
**Correct Answer:**