Test Details & Preparation
A Doppler is a form of ultrasound scan that helps to assess your baby’s health. It measures the blood flow in different parts of your baby’s body, such as his umbilical cord, brain and heart. This helps to show whether he’s getting all the oxygen and nutrients he needs via the placenta.
A Doppler scan can be performed at the same time as a normal ultrasound and uses the same equipment. Most ultrasounds have a Doppler function. The person carrying out the scan (ultrasound doctor) will put some gel on your tummy and move a handheld device (transducer) over your skin.
The transducer sends out sound waves, which bounce off the blood flow to your baby’s body via the cord as well as his blood circulation system. This creates an image on a screen showing the doctor how the blood is flowing. It gives a good idea of how your baby’s doing.
The Doppler scan will take just a few minutes during your regular ultrasound scan. It all happens in real time and the doctor will analyse the results for you.
As with all ultrasound scans, Doppler scans are safe in safe hands. When carried out by a trained ultrasound doctor, a Doppler scan helps to give a clear picture of your baby’s health and wellbeing. Used properly, Doppler scans pose no risk to your baby in the second and third trimesters.
Your doctor may recommend a Doppler scan if you need extra care during your pregnancy if you are carrying twins or more, your baby is affected by rhesus antibodies, your baby is affected by slapped cheek disease and more.