Why doesn't the ultrasound show the umbilical cord around the neck?

Written by Du Rui Xia

Obstetrics

Updated on September 04, 2024

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Generally, in cases where there is umbilical cord entanglement around the neck, it can be detected through an ultrasound examination.

However, if the ultrasound does not show the umbilical cord wrapped around the neck, it is possible that the cord moved back around as the fetus moved during pregnancy. It might also be that the cord is not fully wrapped around the fetus's neck, but rather draped over the shoulder or neck. This situation could also relate to the fetal position, making it undetectable.

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Written by Du Rui Xia

Obstetrics

40sec

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Does the umbilical cord wrapping always involve the neck?

Umbilical cord entanglement around the neck usually occurs during the mid-pregnancy period, as this is when the baby moves more frequently. The baby has a larger range of movement within the uterine cavity, which can easily lead to the cord wrapping around the neck, abdomen, legs, or arms. Generally, if there is no cord entanglement found after 32 weeks of pregnancy, it is unlikely that it will occur. However, this is not certain. After the baby engages, which is after 35 weeks, the baby's position becomes fixed, and it is unlikely for cord entanglement to occur thereafter.

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Written by Du Rui Xia

Obstetrics

41sec

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Can umbilical cord around the neck perform fetal position correction?

In cases of nuchal cord, it is not advisable to attempt correcting abnormal fetal positions, because if the fetal position changes abnormally after an attempted correction while the umbilical cord is wrapped around the neck, it may worsen the degree of the nuchal cord, potentially leading to fetal hypoxia or even asphyxiation. However, if the umbilical cord is relatively long, it might not affect the changes in fetal position, and sometimes the fetus can automatically free itself from the nuchal cord through its own movements. It is important to regularly visit the hospital for prenatal check-ups to detect any other potential abnormalities.

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Written by Liu Wen Li

Obstetrics

46sec

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How to deal with one loop of umbilical cord around the neck detected by four-dimensional ultrasound?

If the umbilical cord is wrapped around the neck once, there is no need to worry about it, because having the umbilical cord wrapped around the neck once is not as terrifying as it seems. If you want to give birth, it is completely feasible, and for most people with the umbilical cord wrapped around the neck once, if there are no other adverse factors, it generally does not affect the delivery. Moreover, even if you want to do something about it, you are powerless. It's not something that the pregnant woman herself can improve. Besides, there are cases where the umbilical cord is wrapped around two or three times, and they have given birth as well, so there is absolutely no need for anxiety.

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Written by Liu Wen Li

Obstetrics

59sec

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How to correct nuchal cord with one loop?

Nuchal cord occurs because the fetus moves frequently within the uterine cavity, which can result in the umbilical cord looping around the neck once, referred to as a single-loop nuchal cord. In fact, it is not correctable because it is impossible to physically reach the umbilical cord or the fetus during pregnancy. Moreover, a single-loop nuchal cord is quite common, occurring in about one-fifth of all pregnancies. If the loop is loose or the umbilical cord is sufficiently long, there is generally no significant impact on the baby. However, if the loop is tight, it can pull on the umbilical cord, causing the blood vessels within the cord to narrow. This may lead to noticeable changes in fetal movements and heart rate. Therefore, with a nuchal cord, it is important to enhance monitoring and pay attention to changes in fetal movements and heart rate.

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Written by Zhang Lu

Obstetrics

1min

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36 weeks umbilical cord around the neck 2 weeks how to correct

At 36 weeks of pregnancy, which is approximately 9 months, it is close to full-term gestation. If an ultrasound reveals that the umbilical cord is wrapped around the neck twice, it often indicates the presence of a W-shaped notch behind the neck. Having the umbilical cord wrapped around the neck twice is a normal physiological occurrence and does not affect the growth and development of the fetus. Many pregnant women, upon hearing about the umbilical cord around the neck, fear it might affect fetal growth and development or cause ischemia or hypoxia, and thus want to correct it through various methods. Firstly, it is unnecessary to correct the umbilical cord around the neck as it is a physiological change. Secondly, there is no known method to correct this condition; neither dietary activities nor any other methods can intervene with the umbilical cord being wrapped around the neck. Therefore, there is no need, nor is there a way, to intervene with the umbilical cord wrapping; it is sufficient to simply observe and wait.