A 32 year old chronic alcoholic patient known case of chronic liver disease is posted emergency laparoscopic appendectomy. which among the following inhalational anaesthetic agent should be used for induction
**Core Concept**
The patient has chronic liver disease, which may impair liver metabolism and affect the clearance of anesthetic agents. The choice of inhalational anesthetic agent is crucial in this scenario to avoid accumulation and potential toxicity.
**Why the Correct Answer is Right**
Sevoflurane is the preferred inhalational anesthetic agent for this patient due to its low potential for hepatotoxicity. It undergoes minimal biotransformation in the liver, primarily through hydrolysis by blood esterases, resulting in a short-acting metabolite. This reduces the risk of accumulation and hepatotoxicity in patients with liver disease.
**Why Each Wrong Option is Incorrect**
**Option A:** Halothane is contraindicated in patients with liver disease due to its potential for hepatotoxicity, which is associated with its metabolism by cytochrome P450, leading to the formation of trifluoroacetic acid and free radicals.
**Option B:** Isoflurane is not metabolized significantly by the liver, but its use is not preferred in patients with chronic liver disease due to its potential for causing hepatitis and liver damage in rare cases.
**Option C:** Desflurane is highly metabolized by the liver, which may lead to the formation of toxic metabolites and exacerbate liver dysfunction in patients with chronic liver disease.
**Option D:** Methoxyflurane is highly nephrotoxic due to the formation of inorganic fluoride ions and is contraindicated in patients with renal impairment, making it an inappropriate choice for this patient.
**Clinical Pearl / High-Yield Fact**
When using inhalational anesthetics in patients with liver disease, choose agents that undergo minimal biotransformation, such as sevoflurane or desflurane, and avoid those that are highly metabolized, like methoxyflurane.
**Correct Answer:** C. Desflurane