What does a nuchal cord refer to?

A nuchal cord specifically refers to a situation where the umbilical cord is wrapped around the baby's neck. This can occur during delivery and is relatively common, with several studies indicating that it happens in a significant percentage of births. While it can raise concerns about potential complications during delivery, many babies can be born healthy even with a nuchal cord, as the cord is usually loose and the fetus can tolerate the situation.

The other options characterize different issues concerning the umbilical cord but do not define what a nuchal cord is. For instance, an umbilical cord that has separated from the placenta pertains to cord detachment, which is a concern for fetal oxygenation and viability. A lacerated cord refers to an injury that can impact blood supply and oxygen delivery. A cord with abnormally developed blood vessels would describe a specific vascular pathology. Understanding the terminology and implications of a nuchal cord is crucial for safe delivery practices in obstetrics.