A Guide for Expectant Mothers: 3 Mandatory Ultrasound Scans During Pregnancy
- Onyait Reuben
- Jan 22
- 2 min read
Ultrasound scans are an invaluable tool in modern obstetrics, providing crucial insights into the developing fetus. While the frequency and types of scans can vary slightly based on individual circumstances and medical history, there are three generally considered mandatory:

1. First-Trimester Ultrasound (Around 6-10 Weeks):
Purpose:
Confirm pregnancy: This is often the first ultrasound to confirm the presence of a gestational sac and fetal heartbeat.
Determine gestational age: Accurately dating the pregnancy helps establish an expected due date and monitor fetal growth appropriately.
Check for multiple pregnancies: This scan can detect the presence of twins or other multiples.
Rule out ectopic pregnancy: This scan helps identify if the pregnancy is implanted outside the uterus.
What to Expect: This is usually a transvaginal ultrasound, where a small probe is inserted into the vagina. While it may feel a bit uncomfortable, it provides a clearer image in the early stages of pregnancy.
2. Anatomy Scan (Around 18-22 Weeks):
Purpose:
Detailed assessment of fetal anatomy: This comprehensive scan evaluates the major organs and structures of the fetus, including the brain, heart, spine, kidneys, and limbs.
Assess fetal growth and development: This scan helps determine if the fetus is growing at an appropriate rate.
Assess placental position: This helps identify potential complications such as placenta previa (placenta covering the cervix).
Determine fetal sex (if desired): While not medically necessary, this scan can often reveal the sex of the baby.
What to Expect: This is typically a transabdominal ultrasound, where a gel is applied to the abdomen and a handheld device is moved across the belly to capture images.
3. Growth Scan (Around 32 Weeks):
Purpose:
Monitor fetal growth: This scan helps assess the size and weight of the fetus to ensure it is growing appropriately.
Assess amniotic fluid levels: This helps ensure there is enough fluid surrounding the fetus for proper development.
Monitor placental function: This scan helps assess how well the placenta is delivering nutrients and oxygen to the fetus.
What to Expect: This is also typically a transabdominal ultrasound.
Important Note:
These are general guidelines, and your doctor may recommend additional scans based on your individual medical history or if any concerns arise.
Ultrasound scans are generally considered safe for both mother and fetus.
If you have any questions or concerns about ultrasound scans or your pregnancy, please consult with your healthcare provider.
Disclaimer: This blog post is for informational purposes only and should not be considered medical advice.



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