Nuchal Translucency (NT) Scan

What is a Nuchal Translucency (NT) Scan?

The Nuchal Translucency (NT) Scan, also known as the First Trimester Risk Assessment Scan, is a specialized ultrasound performed between 11 and 14 weeks of pregnancy. It’s an important step in early pregnancy care, as it helps screen for any potential concerns about your baby’s development and health.

 

Why is it important?

The NT Scan provides valuable information to assess:

• Structural Normality: It checks the early development of the baby, ensuring there are no obvious structural abnormalities.

• Risk of Chromosomal Conditions: The scan looks for signs that may indicate an increased risk of conditions like Down syndrome or other chromosomal abnormalities.

Additionally, the NT Scan includes Doppler studies, which measure blood flow and help identify women who may be at higher risk for certain pregnancy-related complications, such as:

• Pre-eclampsia (a condition involving high blood pressure and organ dysfunction)

• Fetal Growth Restriction (when the baby is not growing as expected)

 

How is the risk calculated?

After the scan, a personalized risk assessment is made by combining several factors:

• Maternal Age: Your age plays a role in calculating risk.

• Ultrasound Findings: The measurements and observations from the NT Scan.

• Biochemistry Data: A blood test taken between 8 and 10 weeks of pregnancy that measures specific hormones (free β-hCG and PAPP-A), providing additional data for assessing risk.

What does this mean for you?

This comprehensive screening helps provide you and your healthcare team with important information about your pregnancy. It supports early identification of potential risks, allowing for closer monitoring and ensuring the best possible care for both you and your baby.