Down Syndrome and the Risk of Having a Second Child

Question

Down syndrome is a disease caused by chromosomal abnormality (an extra 21st chromosome). 60% of affected children are aborted in the early stages of pregnancy, and survivors have significant intellectual disabilities, distinctive facial features, growth and development disorders, and a higher risk of malformations. The purpose is to predict the risk of fetal Down syndrome by testing pregnant women’s blood. It is recommended that all young women under the age of 34 should undergo detailed Down screening, as each pregnancy and child has a unique genetic makeup. It is best to have the detailed examination between 16 to 18 weeks. There is no direct relationship between the first child and the second child, so it is recommended that you still go to the hospital for additional careful examination.

Answer

The occurrence of Down syndrome is not directly related to the number of pregnancies, as each pregnancy has its unique genetic composition. It is recommended that all pregnant women, especially those under the age of 34, should undergo Down syndrome screening to assess the risk of their fetus.