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Doctor insights on: Uterus Measuring Large For Gestational Age First Trimester

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Uterus (Definition)

The uterus is a muscular organ in a woman's pelvis where the the fertilized egg attaches ...Read more


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Can a first trimester ultrasound gestational age/edd be wrong by 7 weeks?

Can a first trimester ultrasound gestational age/edd be wrong by 7 weeks?

No: First trimester ultrasounds are the most accurate for estimating gestational age within +/- 7 days. ...Read more

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Would the gestational age of 12wks+4days @62mm be off by 1 week since ultrasounds have a margin of error of 1 week in the first trimester?

Estimates: Determination of gestational age is based on estimates determined by the last menstrual period and ultrasound. There is a margin of error with ultrasound, but that does not mean that the gestational age is necessarily different by a week. It means that the ultrasound estimate is 12w4d with a very high likelihood that the actual age is between 11+ to 13+ weeks. ...Read more

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Can conception range be over a week off if gestational age is confirmed by early first trimester ultrasound?

Can conception range be over a week off if gestational age is confirmed by early first trimester ultrasound?

Yes: In general, ultrasound established dates should take precedence over menstrual dates if the discrepancy is greater than 7 days if done in the first trimester (first 12 weeks) and more than 10 days if done in the second trimester. ...Read more

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Bleeding during first trimester slightly irregular gestational sac 17mm fluid collection beside gestational sac free fluid in cervix baby hr 167?

Bleeding during first trimester slightly irregular gestational sac 17mm fluid collection beside gestational sac free fluid in cervix baby hr 167?

Threaten miscarriage: You need to wait it out and have another ultrasound in a few days. This is a threatened miscarriage. The fht is good. ...Read more

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If u have gestational diabetes at what point would your baby start to grow larger than average?Could it be larger in the 1st trimester or later on?

If u have gestational diabetes at what point would your baby start to grow larger than average?Could it be larger in the 1st trimester or later on?

Typically later: Gestational diabetes by its very nature is a condition that develops later in pregnancy. It has to do with Insulin resistance caused by the hormones from the placenta. This would not impact a pregnancy in the first trimester. You would expect to see growth issues in the second or third trimesters. ...Read more

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How accurate are 1st trimester ultrasounds in estimating gestational age? What about 2nd trimester ultrasounds?

How accurate are 1st trimester ultrasounds in estimating gestational age? What about 2nd trimester ultrasounds?

Accurate!: 1st trimester ultrasounds are very accurate - have correlated with timed ivf pregnancies. We usually consider 1st trimester scans accurate within 5-7days' 2nd trimester scans within 10-14days. ...Read more

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Can 1st trimester u/s be off 3 weeks in gestational age and in conception? (1st trimester) even if they have been pretty consistent in the pregnany

Can 1st trimester u/s be off 3 weeks in gestational age and in conception? (1st trimester) even if they have been pretty consistent in the pregnany

Not usually: Generally, the best ultrasound for dating is an early first trimester ultrasound. It is unlikely to be off by that much from where the actual pregnancy dates are, but it might be off from your menstrually calculated due date due to issues with when your last period was. ...Read more