What Factors Increase the Risk for Trisomy 21 (Down Syndrome)?

Learn the key factors that increase the risk for Trisomy 21, including maternal age, family history, and prenatal screening indicators.

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High risk for Trisomy 21 (Down syndrome) is largely determined by maternal age (35+ years), family history, or previous pregnancy with Trisomy 21. Additionally, screening results showing abnormal ultrasound findings or high levels of certain substances in maternal blood can increase risk. Early and regular prenatal care are crucial for risk assessment.

FAQs & Answers

  1. What maternal age is considered high risk for Trisomy 21? Maternal age of 35 years or older is generally considered high risk for Trisomy 21.
  2. How does family history affect the risk of Down syndrome? A family history of Trisomy 21 or previous pregnancies with Down syndrome can increase the likelihood of occurrence.
  3. What prenatal screening methods help identify risk for Trisomy 21? Screening methods include ultrasound ultrasounds showing abnormal findings and blood tests detecting elevated levels of specific substances.

Watch More

For more information on prenatal screening and managing chromosomal disorders, explore our related videos on genetic testing during pregnancy and how to prepare for a healthy birth.

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