Screening during pregnancy ### **What is screening?** When it comes to screening, it is not possible to make a 100% accurate diagnosis, but we divide people into two categories.. The first category is people who are at high risk of developing a disorder, and the second category is people who are at low risk of developing a disorder.. Then we candidate high-risk people for more diagnostic tests.. It can prove that if the screening result is positive, the fetus really has a problem or not... ### **What are screenings in the first trimester of pregnancy?** The first screening is done between 11 and 13 weeks of pregnancy, and the first screening is for chromosomes that lead to mental retardation in the fetus.. This process is known as Down syndrome or mongolism.. This test should not be dangerous for the fetus and the mother and is as reliable as possible.. Currently, it is the only way to diagnose Down's. Mongolism is the most common chromosomal disorder that leads to the birth of a live baby.. Its prevalence is between 1 in 700 and 1 in 800 in different countries.. As a result, the first cause of this syndrome was identified as 8 of this disease.. Among the characteristics of these people, we can mention a short forehead, a broad nasal septum and a wide face... Down syndrome is a chromosomal disorder and a genetic disorder. in Regarding the necessary screenings during pregnancy, he should provide advice and solutions to his patients so that the patient can go through this period more easily.**