Doctor insights on:
21 Week Fetus
Please clarify: This is a little different of a question. Can you clarify whether you are referring to the left ventricle of the heart and the entire size of the brain (as in volume, weight, or some other measure?). Or are you asking about the size of the left ventricle of the brain? And why only the left ventricle and not the right? ...Read more
In my scan @21 weeks 4 days fetus has bpd50mm, hc183mm, fl33mm, ac156mm and fetal age is 20weeks 4days but this lags a weeks as per my lmp..Is it ok?
Very accurate: Typically accurate to within +/- 5 days. ...Read more
Maybe but not likely: You have to understand that the usual way to date is weeks from the menstrual period, which is presumed( but not always )2 weeks from conception. But, if a good ultrasound is done and the first third of pregnancy, it should be accurate to within 5 days, not 2 weeks off! if within 5 days, they way still go by the menstrual period or probable date of conception... Talk to your ob! hope this helps. ...Read more
Yes :-): That's a great, and interesting question. Having performed hundred of ultrasounds at this gestational age, I have to say, they pretty much all look alike. Unfortunately the magnification abilities of most ultrasounds are limited, so even if they looked different i wouldn't necessarily be able to detect. Interesting question though! ...Read more
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