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

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 Du Rui Xia

Obstetrics

1min 9sec

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Does an umbilical cord around the neck always require a cesarean section?

When nuchal cord occurs, it is not always necessary to perform a cesarean section, because sometimes the cord may be loosely wrapped around, even if only for one loop, and in such cases, natural childbirth is still possible. However, if the nuchal cord is wrapped more than two or three times, and is tightly wrapped, and if there is fetal hypoxia inside the uterus, then a cesarean section must be performed to quickly terminate the pregnancy. Nuchal cord is a common cause of difficult labor in pregnant women. Therefore, during the later stages of pregnancy, regular prenatal check-ups should be carried out to monitor the fetus's health. If any abnormalities are detected, it is urgent to admit to the hospital for delivery to avoid potential impacts on the baby, such as hypoxia or asphyxiation.

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Written by Du Rui Xia

Obstetrics

43sec

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Umbilical cord around the neck ultrasound manifestations

The impact of umbilical cord entanglement on the fetus is quite significant. If the entanglement is excessive and tight, it can lead to fetal hypoxia. Generally, fetuses with the umbilical cord wrapped around the neck once or draped on the neck do not show clinical symptoms. However, if the entanglement is tight, it can jeopardize fetal health. During an ultrasound examination, echoes can be seen on the fetus's neck where the umbilical cord is wrapped, and distinct pressure marks may appear on the skin. A single wrap around the neck appears as a U-shape, two wraps appear as a W-shape, and three wraps as a serrated shape.

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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 Zhang Yin Xing

Obstetrics

1min

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What should I do if the umbilical cord is wrapped around the neck once?

Umbilical cord wrapping around the neck once is a very common phenomenon, occurring in 20% of fetuses. When the umbilical cord wraps around the neck once, if the umbilical blood flow and fetal movements are normal, it indicates that the cord wrapping does not affect the fetus and will not have a direct impact on the fetus's intrauterine growth and development. However, during childbirth, attention must be paid to the possibility that the umbilical cord wrapping may cause difficulties in the descent of the presenting part of the fetus, leading to abnormal umbilical blood flow. If difficulties in the descent of the presenting part and changes in the fetal heart rate occur during delivery, the possibility of umbilical cord wrapping should be considered. If necessary, a cesarean section should be performed to terminate the pregnancy. There are no medications or other treatments that can alleviate umbilical cord wrapping; instead, enhanced prenatal monitoring is sufficient.