6-week pregnancy with a CRL of 3mm: Is it a concern?

Question:

Hello doctor,

My pregnancy is 6 weeks with a CRL of 3mm and a fetal heart rate of 110 beats per minute. The standard CRL for a 6-week pregnancy is 4 - 7mm. So, doctor, can you tell me if a 6-week pregnancy with a CRL of 3mm is a concern? I look forward to your advice. Thank you, doctor.

Anonymous customer

Answer:

Answered by Dr. Nguyễn Anh Tú - Department of Obstetrics and Gynecology, Vinmec Hai Phong International General Hospital.

Hello,

Regarding the question "Is a 6-week pregnancy with a CRL of 3mm a concern?", the doctor answers as follows:

CRL (Crown Rump Length) is a measurement in millimeters that represents the length of the fetus from head to buttocks. Doctors use this measurement to assess the growth rate of the fetus in the mother's womb through ultrasound processes.

For a small gestational age, there is always a margin of error in measurements, so you don't need to worry too much about a 1 or 2mm discrepancy. Such discrepancies do not have much significance. You should continue to follow up with your doctor as scheduled for specific advice.

If you have further questions about the CRL measurement, you can visit a hospital in the Vinmec Health System for further examination and consultation. Thank you for trusting and sending your question to Vinmec. Wishing you good health.

Sincerely!

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