Which one of the following inhaiational agent is contraindicated in a patient witj history of epilepsy?
## **Core Concept**
The question tests knowledge of inhalational anesthetic agents and their potential to precipitate or worsen seizure disorders like epilepsy. Certain inhalational anesthetics can lower the seizure threshold.
## **Why the Correct Answer is Right**
The correct answer, **Sevoflurane**, is known to be associated with a risk of seizures, particularly in patients with a history of seizure disorders. Sevoflurane can produce epileptogenic metabolites, and its use has been linked to seizure activity, especially in pediatric patients. It is generally advised to use caution or avoid its use in patients with a history of epilepsy.
## **Why Each Wrong Option is Incorrect**
- **Option A:** Desflurane is not commonly associated with seizures or lowering the seizure threshold to the extent that it is contraindicated in epilepsy.
- **Option B:** Isoflurane is considered safe in patients with epilepsy, as it has a minimal effect on the seizure threshold.
- **Option D:** Nitrous oxide does not have a significant association with seizures that would make it contraindicated in epilepsy.
## **Clinical Pearl / High-Yield Fact**
A key point to remember is that **sevoflurane** is often avoided in patients with a history of seizure disorders due to its potential to induce seizure activity. This is a critical consideration in the perioperative management of patients with epilepsy.
## **Correct Answer:** . **Sevoflurane**