2022年6月16日 · False umbilical cord knots are commonly formed variants in the anatomy of the umbilical cord. It basically represents an exaggerated looping of the umbilical cord vessels, causing focal dilatation of the umbilical cord vessels.

2019年12月18日 · 脐带真结（true knot） 定义： 指脐带在宫腔内形成环套，大多由胎儿运动导致，发生率约 0.3-1.2%，是胎儿性命攸关之所在 。 发生因素： 脐带过长是脐带真结的最强影响因素，其次产妇高龄，孕次增加、羊水过多、男性胎儿、糖尿病、孕前慢性高血压 。

2023年10月3日 · Cord congestion in a true knot is a condition in which the umbilical cord becomes twisted or tangled around itself or another structure, cutting off the flow of oxygen-rich blood to the baby. This can be a potentially life-threatening situation for the baby and should be addressed immediately.

So-called false knots, in contrast, are varicose dilatations of umbilical vessels with an appearance sometimes imitating true knots. Their course is snaked but the UC does not form an actual knot that can tighten. UC knots are usually diagnosed postnatally. Antenatal diagnosis of true knots is possible, also causing major maternal anxiety.

3 天之前 · False Knots (Pseudoknots) Any protuberance or bulge in the umbilical cord of a baby present in an ultrasound is very likely a false knot. These types of knots are slight variation in anatomy of the cord, generally formed by blood vessel swelling or when the cord is covered by excessive Wharton’s jelly.

What is a false knot in an umbilical cord? A false knot (or pseudoknot) is a very common variation in umbilical cords caused by extra looping of the blood vessels inside the whartons jelly. False knots do not have any clinical significance and can range from very small to several centimetres.

2024年1月24日 · The true umbilical cord knot could be a knot in a singleton pregnancy or an entanglement of two umbilical cords in monoamniotic twins. Clinical manifestations are almost silent, which can raise clinical challenges.

2020年4月15日 · Other findings: True and false knots, cysts, hemorrhage, or ruptures. If true umbilical knots are noted, one should describe if the knots are loose or tight. The tight knots are more serious and may have a more significant clinical impact by stopping the blood flow from the placenta to the baby.

false knot False umbilical cord knot, varicosity Neonatology A prominent, often tortuous aggregation of dilated ectatic vessels with ↓ in covering by Wharton's jelly. Cf True knot.

Indicates exaggerated looping of the umbilical cord vessels that cause focal cord dilatation. Is also used to describe ectatic surface vessels, varices and focal accumulation of Wharton's jelly. It is thought to arise as a result from the increased length of the umbilical vein in comparison to the umbilical arteries.