causes of a neck-wrapped umbilical cord

The nuchal chord phenomena, often known as the umbilical cord phenomenon, may occur for a number of causes. This may happen due to the baby's vigorous movements within the mother's womb as well as other conditions including a lengthy umbilical chord, an abundance of amniotic fluid, or a lower fetal size. Expectant women should closely monitor their baby's fetal movements and utilize ultrasound scans to check for nuchal cords.

1. Particular Root Causes of Nuchal Cord


  1.  Extra-Long Umbilical chord: When the umbilical chord is extra-long, it is more likely to tangle when the baby moves.
  2.  Abundant Amniotic Fluid: An abundance of amniotic fluid might give the infant more room to move about, which raises the risk of cord entanglement.
  3.  A smaller fetus has more room to flip and rotate within the uterus, which increases the risk of the umbilical cord being twisted. A single nuchal cord often occurs about 25% of the time, two loops around 7% of the time, and three loops as seldom as 1 in 200 to 1 in 100 occurrences.


2. How Is the Nuchal Cord Usually Found?

Ultrasound exams provide clear observations of nuchal cords. The diagnosis rate with a color Doppler ultrasound may be as high as 78.9%, compared to a 2D ultrasound's about 33.3% diagnostic rate. With 3D and 4D ultrasound exams, the diagnosis accuracy is close to 100%.

Prenatal diagnosis of a nuchal cord might entail utilizing ultrasound scans to look for any indications of cord compression on the baby's body. The number of loops the umbilical cord has wrapped around may be precisely determined by skilled ultrasonography physicians. Electronic fetal monitoring may be used to monitor changes in the baby's heart rate and determine if the entanglement has an impact on the baby's health. Significant heart rate changes or irregular heart rate decelerations might be signs of pressure or tension on the umbilical cord.

It's crucial to remember that the lack of nuchal cord identification in one ultrasound exam does not ensure that it won't happen in subsequent ones. The relocation of a newborn may rapidly be followed by cord entanglement. Similar to this, even after a nuchal cord is discovered, it could get untangled as the infant moves on.

In conclusion, there are a number of probable explanations for the nuchal cord phenomenon, including the fetal size, amniotic fluid content, and length of the umbilical chord. Although ultrasound scans are essential in the diagnosis of nuchal cords, pregnant moms should be aware of their baby's movements and seek the advice of medical specialists as needed.


This post was recently updated on Aug 27, 2023