Nuchal cord type A and type B.
Nuchal cord type A and type B need to be distinguished at delivery. Type A encircles the neck in an unlocked pattern. Type B encircles the neck in a locked pattern. In a prospective review of nuchal cords the type B pattern occurred in 1 in 50 births. Cesarean section and stillbirth were associated with type B nuchal cord.
Collins
J H
JH
Pregnancy Institute, Slidell, Louisiana 70461, USA.
D002585:Cesarean Section; D005260:Female; D005313:Fetal Death / Q000209:etiology; D005316:Fetal Distress / Q000175:diagnosis* / Q000209:etiology; D006801:Humans; D007226:Infant Mortality; D007231:Infant, Newborn; D007746:Labor Presentation; D011247:Pregnancy; D011446:Prospective Studies; D014470:Umbilical Cord / Q000002:abnormalities*