Ultrasounds are a routine part of prenatal care. These noninvasive tests use sound waves to create images of your baby inside the womb and can be used to:
- Confirm your due date.
- Check your baby's organs and body parts.
- Monitor your baby's growth.
- Assess your baby's well-being.
Ultrasounds are typically done at key stages during pregnancy:
1) First-trimester ultrasound (dating scan)
- This confirms your pregnancy, checks for the baby’s heartbeat, and estimates your due date.
- It may be done with a probe placed on your belly or one inserted into your vagina.
2) Nuchal translucency (NT) scan
- Some patients are offered this scan between 11 and 14 weeks to assess the risk of certain chromosomal conditions like Down syndrome.
3) Anatomy scan
- This is usually done between 18 and 22 weeks to check your baby’s organs, limbs, and overall development in more detail.
4) Third-trimester ultrasound
- This is sometimes done to assess your baby’s size, position, or specific concerns like low amniotic fluid.
In general:
- Most ultrasounds take about 20 to 60 minutes and are safe for your baby.
- There's no need to fast or change your diet.
- If you want someone with you, ask if you can bring your partner or a family member for support.
For the first-trimester ultrasound, drink plenty of water so you can get a clear image.
For the second- and third-trimester ultrasounds, be sure to follow any specific instructions from your provider.
It’s natural to feel anxious before an ultrasound, but remember it's an important tool in making sure you and your baby are healthy.
Normal results mean your baby is growing well and no problems were found.
If the ultrasound shows any concerns, your health care provider will discuss them with you and may recommend additional tests or follow-up ultrasounds.
Learn about prenatal ultrasounds, what they check for, and how to prepare.
