Hepatoxic anaesthetic agent is :
**Core Concept**
The question is testing knowledge of hepatotoxicity associated with anesthetic agents. Hepatotoxicity refers to the potential of a substance to cause liver damage or dysfunction. In the context of anesthetic agents, this can be due to various mechanisms including direct toxicity, idiosyncratic reactions, or mitochondrial damage.
**Why the Correct Answer is Right**
Halothane is a halogenated inhalational anesthetic agent that has been associated with hepatitis and liver damage. This is thought to occur through a mechanism involving the formation of trifluoroacetyl chloride, which can covalently bind to liver proteins and trigger an immune response. This is a classic example of idiosyncratic hepatotoxicity.
**Why Each Wrong Option is Incorrect**
**Option A:** Isoflurane is another halogenated inhalational anesthetic agent but it is not as strongly associated with hepatotoxicity as halothane. Isoflurane is generally considered safe for use in patients with liver disease.
**Option B:** Nitrous oxide is a commonly used inhalational anesthetic agent, but it is not typically associated with hepatotoxicity. Nitrous oxide is generally considered safe for use in patients with liver disease.
**Option C:** Propofol is a commonly used intravenous anesthetic agent, but it is not typically associated with hepatotoxicity. Propofol is generally considered safe for use in patients with liver disease.
**Clinical Pearl / High-Yield Fact**
Halothane hepatitis is a rare but serious condition that can occur after exposure to halothane. It is characterized by the development of hepatitis and liver damage, often after multiple exposures to the agent.
**Correct Answer: C. Propofol is not hepatotoxic.