What week does ultrasound measure nape skin opacity?

The article was consulted professionally by Master, Dr Ta Quoc Tau – Obstetrics and Gynecology Department – Share99 Da Nang International Health Hub.

Ultrasound measuring nape skin opacity is one of the important pre-birth screenings, it helps to detect the fetus is likely to have Down syndrome. What determines whether an ultrasound of the nape of the nape of the neck is successful depends on the time, measurement technique, since sooner or later there are no exact results.

1. Ultrasonic definition of nape skin opacity?

An ultrasound of the nape of the neck (nuchal traslucency – NT) is a way to examine the nape of the fetus to diagnose Down syndrome. If the ultrasound results measure the abnormality of the nape of the neck of the fetus, the pregnant mother will have to conduct a few more tests to know exactly if the baby has Down.

Through the results of ultrasound measuring the blurring of the napeof the neck, pregnant women can continue to be prescribed a number of other tests such as amniotic puncture, prickly bioped … to further find chroma abnormalities in the fetus. At the same time, you are also instructed to take blood tests to measure HCG ink and PAPP-A protein (babies with Down with high hCG and low PAPP-A content), Doubltest, Triptest. At that time, the diagnosis of Down syndrome in a child can give accurate results of up to 90%. This is called a combination technique.

Nape opacity: the negative drum image (fluid in essence) is located behind the nape of the neck, the upper limit can be exceeded on the nape towards the skull, the bottom extends to the back of the pregnancy. Physical presence at the 10th to 14th weeks.

How to measure nape skin opacity?

Ultrasound of nape skin opacity helps detect fetuses likely to have Down syndrome

2. What week is the translucity of the nape of the neck?

Ultrasound of nape skin opacity is usually performed at gestational age from 11 weeks 6 days to 13 weeks 6 days of pregnancy. However, in the first weeks, pregnancy may have different developmental speeds and slight differences from the theoretical situation.

  • Take measurements from weeks 11 to 13 weeks 6 days
  • 45 mm <CRL < 84 mm

Before the 11th week, the measurement technique is difficult because the fetus is too small, after the 14th week, the excess fluid accumulated in the nape of the neck will be absorbed thanks to the development of the fetal lymphatic system, the skin of the nape will return to normal (does not mean normal pregnancy) so the ultrasound measure of nape skin blur is no longer meaningful. Therefore, it is extremely important to perform an ultrasound of the nape of the nape of the neck between weeks 11-13 of pregnancy.

What week does ultrasound measure nape skin opacity?

Fetal nape opacity

The measurement technique is mainly performed through ultrasound but in some cases, additional vaginal scans are carried out for the mother, for accurate results. There is no danger to the mother and baby during manipulation.

If this index is high in combination with other abnormalities, the doctor will prescribe a prickly biopsy or amniotic puncture at weeks 17-18 of pregnancy to diagnose the disease. This ultrasound can also detect some other malformations such as infertile pregnancy, abdominal wall openings, no nasal bones …

In fact, there are many mothers who vote for an ultrasound, the results of the fetus are still well developed. However, babies at birth experience abnormal problems. The main cause of this condition in the child is the fact that the pregnant mother skips the ultrasound stage to measure the opacity of the nape of the nape of the neck at the time of need. She kept nailing to the ultrasound results periodically and forgot that to ensure the development of the fetus, she also had to perform other tests attached.

3. Method of measuring nape skin opacity

Ultrasound of nape skin opacity is performed by fetal ultrasound on the abdominal part. However, in some special cases, for mothers with a uterus tilted backwards or if the mother is too fat, it may be necessary to conduct an ultrasound probe to give the most accurate results. All these techniques do not pose any danger to the mother and baby.

  • Take measurements from weeks 11 to 13 weeks 6 days
  • 45 mm <CRL < 84 mm
  • Make 3 measurements and get the largest measurement results
  • The vertical cross section is exactly the same with the pregnancy lying still
  • Magnification images
  • Distinguish the amniotic membrane from the tissue
  • Place the cursor in the right position

To know the exact age of pregnancy, the doctor will measure the length from the top of the head to the end of the backbone of the baby. Then continue to measure the translucity of the nape of the neck, this translucent is a white line that appears on the back of the neck while the surrounding area is darker in color. Through the ultrasound screen, you can see the parts of the child such as the head, backbone, legs, hands. This ultrasound also helps detect abnormalities in the abdomen or skull of the fetus.

Method of measuring nape skin opacity

To know the exact age of pregnancy, the doctor will measure the length from the top of the head to the end of the baby's backbone

Also during this pregnancy ultrasound, the mother will be able to clearly see the parts of her body such as the head, spine, limbs, feet, hands on the screen. Ultrasounds during these weeks of pregnancy can also help doctors detect abnormalities in the baby's abdomen or skull. However, to be sure, the mother should not skip the next ultrasounds at weeks 16 and 20 of pregnancy.

What week does ultrasound measure nape skin opacity?

Ultrasound measurement of nape skin opacity

Measuring nape skin opacity is important, helping to determine exactly whether the fetus has Down or not, the first 3 months are the golden time for the most accurate results. As a result, the accuracy of this technique depends greatly on the ultrasonic device and the qualifications of the doctor.

Share99 International Health Hub is a high-quality medical facility that is highly appreciated by customers for the quality of examination and treatment as well as professional services. Share99 has the most modern equipment system, with the most advanced ultrasound machines in the world and a team of obstetricians experienced in diagnosis and pre-birth intervention to help monitor obstetrics well and detect fetal malformations early.

In addition, in order to protect the health of mothers and babies comprehensively, Share99 provides a diverse package of maternity services, in which the 12-week package maternity program helps to monitor the health of mothers and babies at the beginning of pregnancy, detect early and promptly intervene in health problems. In addition to the usual services, the 12-week maternity monitoring program has special services that other maternity packages do not have such as: Double Test or Triple Test for Fetal Malformations; dosing tests of neovascular factors for pre-seizure diagnosis; thyroid screening tests; Rubella test; testing for parasites transmitted from mother to child seriously affects the brain and physical development of the baby after birth. The ultrasound technique in the 12-week package is performed using a high-end 4D ultrasonic machine system such as ge Voluson E10 which detects more than 95% of malformations during this period. Equipped with the latest technologies, ge Voluson E10 enables enhanced image quality and penetration for superior high-resolution images and easy operation.

After the results of pregnancy examination and testing, doctors will analyze and advise on genetics, nutrition, proper rest for the pregnant woman to help the mother and baby have the best health, the fetus develops comprehensively.

If you want to use maternity services at Share99, please register directly at the website to be served.

Customers who have a pregnancy check-up at Share99

Photos of customers receiving health advice after pregnancy examination at Share99

For direct advice, please click hotline number or register online HERE. In addition, you can register for remote consultation HERE

SEE MORE:

  • Maternity Care Program 2020 – 12 weeks
  • 12 weeks pregnancy 1.5mm skin opacity and is the risk of Down 1:150 syndrome dangerous?
  • Fetal tests to be done at 12 weeks of age

About: John Smith

b1ffdb54307529964874ff53a5c5de33?s=90&r=gI am the author of Share99.net. I had been working in Vinmec International General Hospital for over 10 years. I dedicate my passion on every post in this site.

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