True umbilical cord knot

Last revised by Rohit Sharma on 11 Sep 2018

True umbilical cord knots are a rare occurrence and as the name suggests represent a knot formation in the umbilical cord.

They occur in less than 1% of pregnancies.

Most of the knots formed in the umbilical cord are loose and thereby do not adversely impact the fetal well being; however, due to fetal movement or descent, the knot could get tighter, thereby decreasing the umbilical cord blood flow. This could further lead to fetal asphyxia and demise.

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