Gynaecology & Obstetrics A mother with 10 wks pregnancy and who had previously baby with open neural tube defect which statement is true – A Sodium valproate causes open neural tube defect. B Risk of recurrence is 10% C Aminocentesis should be done D Give multivitamin. 💡 Explanation A mother with 10 wks pregnancy and who had previously baby with open neural tube defect which statement is true - ✓ Correct Answer: A. Sodium valproate causes open neural tube defect.