Doppler ultrasound in pregnancy
pregnancy Doppler · fetal Doppler · umbilical artery Doppler · blood flow ultrasound in pregnancy
The doctor uses ultrasound to see how blood flows in the umbilical cord and in the vessels of the uterus and the baby. It shows if the baby gets enough nutrients and oxygen.
Often with screening in the 2nd and 3rd trimesters. More often if the baby is small, or with high blood pressure, diabetes, or twins.
⏱ Duration: usually 15 to 30 minutes; results right away
Be sure to tell your doctor
How to prepare
- Prep. Usually none. You can eat, and you do not need a full bladder.
- Clothing. Comfortable clothes, so your belly is easy to uncover.
What to bring
- Your pregnancy record (prenatal card)
- Your referral
- Past ultrasounds and Doppler scans
How it goes
- You lie on your back or slightly on your side
- Gel is put on your belly
- The doctor finds the cord and vessels with the probe
- Blood flow mode is turned on. You may hear the sound of the blood vessels
- The doctor takes measurements in several vessels
What you'll feel
- Cool gel and light pressure on your belly
- Lying on your back can make you dizzy. Tell the doctor, and you will be turned on your side
Afterwards
- You can go back to your usual day right away
- Results usually right away
- If the results are not normal, the doctor will decide on a repeat scan or closer checks
Contact a doctor straight away if
- The baby moves much less or has stopped moving: see a doctor right away or call emergency services
- Bleeding, belly pain, or your water breaking: call emergency services
Common questions
Is Doppler harmful to the baby?
No. When there is a medical reason, it is considered safe. It is done briefly and only as needed.
What is the sound during the Doppler?
It is the sound of blood in the vessels and the baby's heartbeat.