MedTestBD
What is an Ultrasonography of Pregnancy Profile?
An Ultrasonography of Pregnancy Profile (also called an obstetric ultrasound or pregnancy scan) is a non-invasive imaging test that uses sound waves to create images of the developing baby inside the womb. It is completely safe for both mother and baby and produces no radiation. This type of scan provides essential information about fetal growth, position, placenta, and amniotic fluid.
Why is this Scan Done?
- Confirm pregnancy and detect the heartbeat (from around 6–7 weeks).
- Determine gestational age and estimate the due date accurately.
- Check fetal growth — ensuring the baby is growing at the expected rate.
- Detect multiple pregnancies (twins, triplets).
- Assess placenta location — checking for placenta previa, which can affect delivery planning.
- Measure amniotic fluid — too little (oligohydramnios) or too much (polyhydramnios) can signal problems.
- Check fetal position before delivery — whether the baby is head-down or in breech position.
- Screen for structural abnormalities during the anomaly scan (18–20 weeks).
When are Pregnancy Scans Done?
In Bangladesh, doctors typically recommend at least three ultrasound scans during a normal pregnancy:
- First trimester (6–12 weeks): To confirm pregnancy, check heartbeat, and estimate due date.
- Second trimester (18–22 weeks): The detailed anomaly scan — checks all major organs and structures of the baby.
- Third trimester (32–36 weeks): Growth scan — checks baby's size, position, placenta, and fluid levels before delivery.
How to Prepare for a Pregnancy Ultrasound
For early pregnancy scans (first trimester), a full bladder helps improve image quality — drink 2–3 glasses of water about an hour before and avoid urinating. For second and third trimester scans, a full bladder is usually not required. Wear comfortable, loose clothing to make the scan easier.
Is Ultrasound Safe During Pregnancy?
Yes. Obstetric ultrasound has been used safely for decades. It uses sound waves, not radiation, and there is no evidence of harm to mother or baby when performed by a trained professional. However, unnecessary scans without medical indication are not recommended.