true knot

true knot

n.

An intertwining of a segment of umbilical cord, usually without obstructing circulation, commonly formed by the fetus slipping through a loop of the cord.

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true knot

True umbilical cord knot Neonatology A knot of the umbilical cord at various locations and degrees of tightness; edema, grooving, narrowing, tightness, and differences of color and/or diameter on the opposite sides of the knot may indicate vascular obstruction; the placental disk is congested Prognosis Consequences hinge on the tightness of the knot; tight knots cause fetal demise. Cf False knot.