RIU 332 Lecture Notes - Lecture 58: Umbilical Cord Compression, Umbilical Cord, Nuchal Cord
15 Apr 2020
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8. a)with the cord held vertically, vessels along the anterior surface spiral downward from high left to low right, angled like the left side of the letter v, to indicate a left helix. The incidence of a left twist of the cord is found in 7:1 pregnancies. 8: ultrasound images at 29 weeks gestation. A hanging noose sign is seen on 2 dimensional. Us. a transverse section of the umbilical cord is surrounded by a loop of umbilical cord. B, hanging noose sign: power motion imaging examinations. 11. a true umbilical cord knot may cause fetal hypoxemia or even intrauterine fetal death: false knots of the cord, seen when blood vessels are longer than cord, often folded on themselves and produce nodulations on surface of cord. 3: nuchal cord, most common cord entanglement in fetus, multiple coils around fetal neck have been reported.
