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Doctor insights on: Size Of Fetus At 20 Weeks Gestation

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20 weeks pregnant. Now my fetus is cephalic presentation.Any problem bcoz of cephalic at this early gestational age? What are the thngs I should care?

20 weeks pregnant. Now my fetus is cephalic presentation.Any problem bcoz of cephalic at this early gestational age? What are the thngs I should care?

DID YOU ASK YOUR DOC: U should have good communication with your doc, cephalic is normal presentation for 20 weeks but at 20 weeks it doesn't matter what the position is since if it is not cephahlic will most likely end up cepahlic a 34-36 week us is usually done in the us to check position and growth and wt that is when u want the baby to be cephalic. ...Read more

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Dr. Jane van Dis
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Dr. Brad Goldenberg
6 doctors shared insights

Pregnancy (Definition)

If you're pregnant or planning to get pregnant, there are many things you can do to give your baby a healthy start: Regular prenatal visits along with laboratory testing, ultrasounds, prenatal vitamins and immunizations (like the flu shot and whopping cough booster). Now's the time to eat healthy, stay hydrated, and ...Read more


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Which type of scanning is most accurate in seeing fetus abnormalities in 20 weeks pregnancy.color,3d,4d or anything else.not sure of these.plz suggest?

Which type of scanning is most accurate in seeing fetus abnormalities in 20 weeks pregnancy.color,3d,4d or anything else.not sure of these.plz suggest?

It's the scanner: It is the skill of the scanner and their interpretations that make a difference and not the machine itself. Even a higher resolution scan for fetal abnormalities can show a problem, but the person interpreting the scan "misses it". ...Read more

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Dr. Jane van Dis
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Is it safe to have an appendectomy in 2nd trimester of pregnancy? What is the success rate? Do they calm the fetus down prior to the procedure.

Is it safe to have an appendectomy in 2nd trimester of pregnancy? What is the success rate? Do they calm the fetus down prior to the procedure.

Overall yes but: Any surgical procedure, ideally , should wait until after the baby is born. Surgery, even simple surgery, carries risks to both the mom and fetus. However, if the appendectomy is truly needed then proceed. ...Read more

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Dr. Jane van Dis
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After the 6th or 7th week of pregnancy does the fetus double in size, causing the gestational age to be off?

After the 6th or 7th week of pregnancy does the fetus double in size, causing the gestational age to be off?

Early pregnancy: The rate of growth of the fetus in the first trimester is very rapid. An ultrasound in the first trimester has only a 3-6 day error while later in pregnancy that error grows to 3 weeks. The gestational age is more accurate in early pregnancy and less likely to be off in the first trimester. ...Read more

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Fetus measurements: 57mm 12 weeks gestation / 62mm 12 wks+4days gestation. Are measurements this precise to have this difference in size in 4 days?

Sort of: Yes, the measurements on average do correspond to these dates and they are fairly accurate, but not exact. Also it is dependent on how the ultrasound tech measures it. So there are plenty of sources of mild error. ...Read more

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I was 9wks 6days on my 1st u/s (6/25/12). Is that correct knowing that the fetus doubles in size after the 6th week of pregnancy? U/s go by ga / fa ?

I was 9wks 6days on my 1st u/s (6/25/12). Is that correct knowing that the fetus doubles in size after the 6th week of pregnancy? U/s go by ga / fa ?

Ultrasound accurate: The most accurate dating will be by ultrasound done between 6 to 10 weeks gestational age. With the information provided. Due date is january 27th. Estimated conception dates are may 1st plus or minus 4 days. ...Read more

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Does the fetus double in size after 6 weeks of pregnancy, causing the u/s to be off my two weeks? Anytime after 6 weeks of pregnancy?

Does the fetus double in size after 6 weeks of pregnancy, causing the u/s to be off my two weeks? Anytime after 6 weeks of pregnancy?

Yes and no: Here is a link to a chart of the crown rump length averages: http://www.Babycenter.Com/average-fetal-length-weight-chart as you can see, the crl can double about every 2 weeks. But this doesn't mean the u/s measurement can be off by 2 weeks. The error of the u/s measurement depends on when the u/s is done. Earlier has less error +/-3 days while end of pregnancy error can be very large +/- 2w. ...Read more

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Dr. Jane van Dis
Board Certified, Obstetrics and Gynecology
12 years in practice
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