Patient's question:
I got pregnant at the age of 29, and now it's about 4 months. I took a test and the results showed high risk for trisomy 21 twice. The results were 1/701 and 1/100. Neither of the two showed familial inheritance. However, my menstrual cycle isn't very regular. Is it necessary to have an amniocentesis? Is it necessary to have an amniocentesis?Doctor's answer:
The Down syndrome screening is only a method for assessing risk, not a method for verification.1. Trisomy 21 is a congenital chromosomal abnormality and is not necessarily related to hereditary transmission across generations. It may also be caused by environmental industrial pollution, medication intake, exposure to harmful substances, or contraction of certain pathogens. It primarily manifests as congenital mental retardation, which can impose heavy pressure on families and society after birth.
2. Around the fourth month of pregnancy, the fetus grows relatively stably in the uterus. Generally, under the guidance of ultrasound, amniocentesis is considered relatively safe.