Ultrasound for dating pregnancy Online c2c free chat

The scan will usually show that your pregnancy is less far along than suggested by your LMP.

This means that accurate dating reduces your chance of having your labour induced because your baby is thought to be overdue.

Early scans can be out by 5 days or so but i thought by 12 weeks they were regarded as fairly accurate. They must base the measurements on averages, but 3 weeks out seems like a lot.

A full bladder is usually necessary when the scan is done abdominally. 2 weeks is a long time in fetal development terms so it’s more likely that ovulation happened closer to the period than actually thought.

To investigate, the researchers looked at data from the Swedish Medical Birth Register for 1973-1978, when doctors based fetal age estimates on the date of a woman’s last menstrual period, and for 1995-2007, when they used ultrasound measurements.

They analyzed gender differences in outcomes for babies born at 39 to 43 weeks’ gestation during both time periods.

The dating scan will also show if you're expecting twins, triplets, or more.

You may know when your LMP was, but not when you actually conceived. That will happen at your next routine scan at about 20 weeks However, some major problems can be seen at your dating scan, such as issues with the umbilical cord or with your baby's skull or abdominal wall. You may need a second scan to check the first scan's findings. My midwife group is very very natural minded and they agree with the accuracy of u/s dating before 12 weeks (the earlier the better).Appears your baby could have a slightly smaller head.

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