Answering a few questions for pregnant women

I have more than 130,000 readers on my public account, and they ask all kinds of questions. I will answer them all.

Q: Professor Deng, does your hospital have the most advanced four-dimensional ultrasound?

A: Our hospital has the most advanced 2D ultrasound, and of course we also have 4D ultrasound which is not that advanced. 2D is the most advanced, clearest and most useful, while 4D and 3D are just auxiliary. All doctors use 2D to exclude deformities 99% of the time, because 2D is the clearest.

Q: Professor Deng, how can we use ultrasound to diagnose the difference in the length of the fetus's lower limbs before birth? A pregnant woman said that her friend's baby had legs of different lengths.

A: Never measure the length of both femurs separately, always measure one!! Prenatal ultrasound should be done in moderation, the more detailed it is, the better! It should be done in moderation! Otherwise, there will be endless troubles! One more thing: Whose face is completely symmetrical? Whose two femurs are completely equal???

Question: My child has water in his brain, the lateral ventricle is 12mm, and the non-invasive DNA is normal. Can I keep this child?

A: I am a doctor and you are pregnant. I cannot give you a definite answer, I cannot say 100%, but based on my experience, this child should be a good one. If you were my daughter, I hope you would give birth to this child. A father will not lie to his daughter.

Question: Teacher Deng, the fetal gallbladder has not been displayed. If the gallbladder is absent, how should we explain to the pregnant woman? Are there any other tests that need to be done?

A: MRI is recommended. In most cases, the gallbladder will be visible after birth, which means the baby is healthy. However, there are very few cases of biliary atresia after birth, which can have serious consequences.

Question: My child has a 2mm ventricular septal defect, but everything else is normal. Do I need to check his chromosomes?

A: There are two ways to solve this problem. The first way is to give birth to the baby, which is 99% likely to be a very good baby. The other way is to check the chromosomes and get a report with a high probability of being normal. This way you can be completely relieved. You choose. It's like taking a plane to Beijing, which is 99.9% likely to land safely, but if you happen to take Malaysia Airlines, it's hard to say.

Q: Hello, Professor Deng. I would like to ask a question: If the best time for NT is based on CRL (45-84mm), then CRL 84mm is already 14 weeks+ in gestational age, which is inconsistent with NT 13 weeks+6? Please explain this to me, Professor Deng. Thank you!

answer:

❶This is a good question. In fact, we also encounter it in our actual work. Our multi-center early pregnancy center also encounters it. You are not fighting alone.

❷Admittedly, 45-84mm is the internationally accepted range. When CRL is 84, the machine calculates that it is indeed 14 weeks and 2 days, so our unit only draws blood for early Down syndrome to 79.6mm!

❸ But our ultrasound is different. At this time, in addition to measuring NT, the main task is to do early pregnancy ultrasound screening to see the gross anatomical structure of the fetus, so I don’t think we need to stick to the difference of these three days.

❹The statistical analysis of our multi-center study on early pregnancy will be released soon, with big data of more than 20,000 cases. We hope to obtain data that is more suitable for Chinese people.

Q: Director Deng, I would like to ask if physiological midgut hernia in the fetus needs to be reported? Do I need a reexamination?

A: It should be indicated and followed up. In the sixth week of human embryonic development, the midgut loop grows rapidly and the abdominal cavity volume is relatively small, which causes the midgut loop to protrude into the umbilical cavity, forming a temporary umbilical hernia. By the tenth week, the intestinal loop often returns to the abdominal cavity.

Key points for diagnosis of physiological midgut herniation: <11 weeks, only the midgut protrudes.

So, what does a physiological midgut herniation look like? Please see the picture below: The physiological midgut herniation is obvious at 9 weeks and has retracted at 11 weeks.

Question: Professor Deng, if the angle is not corrected, the speed will be wrong. If the speed is wrong, then RI PI S/D will also be affected, right?

Deng Xuedong: RI, PI, S/D have nothing to do with angle correction!!! Because no matter what the angle is, their values are the same. You are right in one respect, for example, S/D is indeed related to speed, but it is a ratio. In other words, if S is higher, D must also be relatively higher, but the ratio does not change!!

In the eyes of 1,000 people,

Ultrasound has 1,000 different faces.

I want to show you

That's 1001 faces.

This face, with the vicissitudes of past struggles,

But still looking forward to the poetry of youth

This face hides ultrasound in the eyes.

But the charm of the small bridge and flowing water,

Hanging on the corners of the eyes

This face is not printed in an ordinary

The boring words in the textbooks,

But with a slight body temperature,