What Is an Umbilical Artery Doppler?

Single umbilical artery refers to the phenomenon that the fetal umbilical cord has only one umbilical artery and one vein.

Single umbilical artery

Single umbilical artery refers to the phenomenon that the fetal umbilical cord has only one umbilical artery and one vein.

Generally, the fetal umbilical cord has two umbilical arteries and one umbilical vein. The fetus has only one umbilical artery and one vein is called a single umbilical artery. This phenomenon is relatively rare in humans, the mechanism of its occurrence has not been fully elucidated, and its clinical significance is still being studied. It is generally believed that the single umbilical artery is one of the markers of abnormal fetal development. However, only the single umbilical artery is a marker, which does not indicate abnormal fetal development or abnormal fetal chromosomes. It just suggests that the probability of accompanying abnormalities is about ten times higher than that of a normal umbilical fetus. Bao Ma, who has a single umbilical cord, should have a fetal malformation check 28 weeks ago and pay attention to fetal movement.

Chinese name

Single umbilical artery

Explanation

The fetal umbilical cord has only one umbilical artery

Pay attention

Do a fetal malformation check before 28 weeks

Incidence

0.46%

Blood

Venous blood

One umbilical artery is missing (

The single umbilical artery cannot be intervened, and its cause is not medically clear. Be regarded as a natural, accidental nature.

Generally single umbilical artery. Eliminate the three aspects of fetal system b ultrasound, fetal heart, fetal chromosome. Do these three checks.

No problem.

The single umbilical artery was entered into the b-ultrasound due to the problem of the risk coefficient and the probability. It does not mean that a baby with a single umbilical artery is problematic. The vast majority of single umbilical babies born are good. The problem with a single umbilical artery fetus is that the odds of having an abnormality are about ten times higher than those of a double umbilical artery, if all your tests are normal. Then the risk is almost the same as an ordinary fetus.

If there is a problem, it is usually found in the palace. The baby checks everything is normal. The so-called deformity probability is not much different from a normal baby.

The single umbilical artery is mainly to do a good job of checking, ruling out abnormalities in development, and doing b-type ultrasonography. The minimum is to do more than three levels of screening. They are one between 20-23 weeks and one between 28-32 weeks. It is also recommended to have a color Doppler ultrasound of the fetus and [Fetal Echocardiography] to exclude the possibility of congenital heart disease. Do your best in 24-26 weeks. It is best not to exceed 28 weeks. Conditional is also recommended for fetal chromosome examination. When everything is normal, give birth with peace of mind.

About the relationship between single umbilical artery and chromosome:

A single umbilical artery is a soft indicator of chromosome recommendations. There is no direct relationship between a single umbilical artery and a chromosomal abnormality. However, it is indirectly related. The detection rate of chromosome abnormalities of single umbilical artery is about 0.1% -0.2%. The fetal single umbilical artery detection rate is also quite high in chromosomal abnormal fetuses. All single umbilical arterial fetal chromosomes have conditions and it is recommended to do one. Safety is the top priority. The doctor has this obligation and responsibility. It is recommended that you do the amniotic fluid puncture. You can only decide for yourself. Personally, I do nt think I am worried about economic issues. Amniotic fluid Puncture should be done conditionally.

Examination for chromosomal abnormalities: NT and Down's screening in the first trimester, amniotic fluid in the second trimester

The puncture [done 24 weeks ago] and umbilical cord blood puncture , there is also a non-invasive DNA test, but there is a certain risk of puncture, you take it yourself.

There are no abnormal methods to check the baby's chromosomes, but not everywhere. Non-invasive prenatal diagnosis of chromosomal aneuploidy using fetal nucleated red blood cells in peripheral blood of pregnant women. The accuracy rate of non-invasive DNA prenatal diagnosis is also high. Is to draw maternal blood, extract fetal chromosomes from maternal blood for testing, to know whether the fetus has 18, 13, 21 chromosomal abnormalities, this abnormality generally refers to trisomy abnormalities. It is just that the clinical period of this test is short, the accuracy rate is still waiting to be verified, and it was stopped in 2014 in China.

About the relationship between single umbilical artery and hypoxia, cesarean section

The single umbilical artery is a physiological abnormality of the umbilical cord, which is not directly related to oxygen supply and cesarean delivery. However, the tolerance of single umbilical cord in the uterus will affect the blood circulation to a certain extent, and the probability of hypoxia in single umbilical artery will be greater than that in double umbilicus. Therefore, Baomao, who is pregnant with a single umbilical artery, should pay attention to fetal movement, and the dissection is relatively safe. There are a lot of single umbilical arteries in the Q group that Baoma can add to understand.