Question

Which of the following antiepileptic drug is associated with a particularly high risk of neural tube defects?

• A. Valproic acid
• B. Lamotrigine
• C. Levetiracetam
• D. Low dose carbamazepine

Hint:

Valproic acid is highly teratogenic and is especially associated with neural tube defects.

Answer 1

The Correct Option is A

Concept:
Some antiepileptic drugs are teratogenic and can cause congenital defects when used during pregnancy.

Step 1: Understanding neural tube defects.
Neural tube defects occur when the neural tube fails to close properly during embryonic development. Examples include spina bifida and anencephaly.

Step 2: Valproic acid risk.
Valproic acid is strongly associated with neural tube defects when used during pregnancy.

Step 3: Clinical importance.
Women of childbearing age taking valproic acid require careful counseling, pregnancy planning, and folic acid supplementation when appropriate.

Step 4: Checking other options.
Lamotrigine and levetiracetam are generally considered safer alternatives compared with valproic acid.
Carbamazepine can also have teratogenic risk, but valproic acid has particularly high risk.

Step 5: Final answer.
Therefore, the correct answer is valproic acid. \[ \boxed{\text{Valproic acid}} \]