Doctor insights on:
Gestational Age Determination
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
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
Very: It has a 5-7 day margin of error. It is quite accurate. ...Read more
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
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
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
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
Ultrasound shows gestational age 6w4days. Yolk sac present only. Should there be an embryo? Heartbeat?
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.
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