Chance of subsequent baby having NTD when first baby was born with NTD -: (A) 2%, (B) 4%, (C) 10%, (D) 20%
Answer is B. Ans. is 'b' i.e., 4%The recurrence risk of neural tube defect is :3 - 5 % if a couple has previously had a child with either anencephaly or spina bifida.5% if either parent was born with a NTD.10% if a couple has two affected children