From the case:
Nuchal cord types
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According to the Giacomello classification system, a nuchal cord be can be of two types:
- type A: a nuchal loop that encircles the neck in a freely sliding pattern, where the placental end crosses over the umbilical end; this pattern can undo itself
- type B: a nuchal loop that encircles the neck in a locked pattern, where the placental end crosses under the umbilical end; this pattern locks and cannot undo itself with potential for fetal morbidity or mortality
Case Discussion
Authors: Philippe Jeanty, Arnold J. Rudolph, Latha Natarajan, Morarji Pessay
Source: Wikipedia
Original files: https://commons.wikimedia.org/wiki/File:NuchalFree.gif
https://commons.wikimedia.org/wiki/File:NuchalLocked.gif
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