What causes high risk of trisomy?

I believe that when a new life comes into a family, that family is happy, blessed and excited. Although they are excited, they should not forget to check the baby. Down syndrome screening is to extract the serum of the pregnant woman, combine it with the pregnant woman's condition, and then calculate the risk index of Down syndrome children. Usually, the result after the mother is checked is a high risk of trisomy 21, which means that the mother's baby is very likely to have a congenital disease. At this time, the mother should not panic, you need to do an amniocentesis for a specific check. But some mothers are very confused. They didn’t do anything during pregnancy, so why are the test results still high risk?

1. Introduction

Two names: Down syndrome or trisomy 21, also known as congenital idiocy in China, is one of the most common serious birth defects. The clinical manifestations are: the patient has a special facial feature, with upturned outer corners of the eyes, a flat nose bridge, a tongue that often sticks out, muscle weakness and hand dysplasia. The vast majority of patients suffer from severe intellectual disabilities and multiple organ abnormalities, such as congenital heart disease, leukemia, and gastrointestinal malformations. The disease occurs almost everywhere in the world, with few racial differences.

2. Normal value

A high risk of trisomy 21 is greater than or equal to 1 in 250, and a low risk is less than 1 in 250.

The high risk of trisomy 18 is greater than or equal to 1 in 350, and the low risk is less than 1 in 350.

The osb standard should be OSB 1:1000

3. Guidance and Suggestions

Down syndrome screening is an important examination method during pregnancy and one of the effective means to exclude Down syndrome babies. If there is a risk, further examination and clarification are needed in a timely manner, such as amniocentesis or non-invasive DNA testing. It is better to listen to the advice of professional doctors.

Down syndrome screening values ​​are revised values. There are many factors that affect Down syndrome screening values, and weight is only a minor aspect. Screening tests can only help determine the chance that the fetus has Down syndrome, but cannot determine whether the fetus has Down syndrome. Generally speaking, if the pregnant woman does not have any bad habits, the baby should be healthy. Pay more attention to nutrition in daily life.