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Doctor insights on: Gestational Age Determination

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Don't ultrasounds start gestational age from your LMP date?

Don't ultrasounds start gestational age from your LMP date?

Yes: All pregnancies are dated from the first day of the last menstrual period but an early ultrasound is more precise and may change the due date if greater than a 5 day difference. Gd luc. ...Read more

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Week on ultrasound picture is gestational age or fetal age.?

Week on ultrasound picture is gestational age or fetal age.?

Both: Fetal age is of course the exact age of your fetus as determined by measurements taken of the baby. Fetuses have different rates of growth or may have problems with growth, so sometimes the measurement age doesn't match the "expected" gestational age. The best "age" is determined by an early ultrasound between 6 and 12 weeks gestation. Accuracy of ultrasound decreases as pregnancy progresses. ...Read more

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Is gestational age accurate from ultrasound at 9 weeks?

Is gestational age accurate from ultrasound at 9 weeks?

Yes it is: By that point, ultrasound is the primary tool to estimate gestational age. More accurate than last menstrual period. ...Read more

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Does ultrasounds give fetal age or gestionation age?

Does ultrasounds give fetal age or gestionation age?

Gestational age: Ultrasounds factor in the manner in which we 'date' pregnancies and they are basing analysis of your baby's growth against all babies of the same age. Hope that helps! ...Read more

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How accurate is gestational age at 13 weeks via ultrasound ?

About 7 days: First trimester ultrasounds are the most accurate, but a 13 week ultrasound should be quite good at estimating the due date. Best of luck! ...Read more

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Is your gestational age calculated from your baby measurements or from your LMP date?

Is your gestational age calculated from your baby measurements or from your LMP date?

Initially, from LMP: The edc (estimated date of "confinement") is based on the first day of the last menstrual period. But the edc may be adjusted on the basis of early ultrasound exams which can pinpoint the due date to plus or minus less than one week. Ultrasound dates are based on fetal measurements. Hope this helps. Lgromkomd. ...Read more

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How is gestational diabetes outcome correlated to polyhydramnios?

How is gestational diabetes outcome correlated to polyhydramnios?

High Sugars Cause It: If mom's blood sugar is high, the baby's is too. The same way high sugars cause an adult to urinate more, this high sugar. Causes the baby to make more urine, and the baby's urine is what makes up the amniotic fluid. ...Read more

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What individual fetal measurement holds accuracy (represents true gestational age) longest in pregnancy (fl, ac, bpd, hc)?

What individual fetal measurement holds accuracy (represents true gestational age) longest in pregnancy (fl, ac, bpd, hc)?

Must use averages: I don't believe that any single measurement is most accurate throughout pregnancy. It is usually the averages that are taken. The most accurate measurements are actually in the first trimester in the way of the crown rump length in terms of predicting the estimated date of delivery. ...Read more

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Are ultrasounds a very accurate indicator of gestational age?

Are ultrasounds a very accurate indicator of gestational age?

Earlier the better: The accuracy of ultrasound diminishes with the age of the fetus. The most accurate dating is in the first 4-6 weeks. ...Read more

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10+-6days weeks pregnancy crl 3.9.Fhs 162.Growth of fetus is acc to gestational age .Is growth normal♥?

10+-6days weeks pregnancy crl 3.9.Fhs 162.Growth of fetus is acc to gestational age .Is growth normal♥?

Yes: If the report says the growth is accurate to gestational age then that is the same thing as saying that the fetal growth is normal. ...Read more

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At what gestational age of fetus should the bpd measure approximately 4.1cm (41mm)?

BPD: Well we use more than just bpd to calculate the gestational age. Head circ., femur length, and abdominal circ. Also go into the calculation. However, 4.1cm bpd is consistent with about 17 weeks 4 days. ...Read more

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How does gestational age impact fetal weight?

Fetal age and weight: As a normal fetus increases in gestational age, it normally will also increase in fetal weight. ...Read more

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Is the chinese baby gender predictor chart accurate?

Is the chinese baby gender predictor chart accurate?

The odd is ~50/50 : There isn't a sure way to get pregnant with a boy or a girl based on day the week to have relation--there are some anecdotal report to suggest certain time of day favors girl vs boy pregnancy, but no conclusive research. The only sure way is to determine genetically is via insemination etc..Otherwise, your chance is just about 50/50 naturally--same as flipping a coin for head or tail. Good luck. ...Read more

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Ultrasound shows gestational age 6w4days. Yolk sac present only. Should there be an embryo? Heartbeat?

Ultrasound shows gestational age 6w4days.  Yolk sac present only.  Should there be an embryo? Heartbeat?

7 weeks: I usually tell my patients that they should see cardiac activity at 7 weeks . The fetal pole is evident before that. You may want to do beta HCG levels 48 hours apart the change in these values can help answer some of your questions. ...Read more

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Is a 30 mm gestational sac according to a 7.4 weeks pregnant and 13 mm embryo? Is the gestational sac accurate to determine gestational age? Thanks.

Is a 30 mm gestational sac according to a 7.4 weeks pregnant and  13 mm embryo? Is the gestational sac accurate to determine gestational age? Thanks.

Accurate: These figures are approximately accurate and consistent. For example, gestational sac is 27, 29, 33 at 7, 8, 9 weeks gestation while crown rump length (crl) is 8, 15, 21 at 7, 8, 9 weeks gestation. ...Read more