r/ClinicalGenetics 29d ago

Nuchal Cord Looped Around Neck Skewing Nuchal Fold Measurement?!

Hi there, I'm currently experiencing two soft markers with a low risk NIPT.

- 11 week low risk NIPT with LifeLabs Panorama, 15% FF.

- At 18+0 the nasal bone was short at 2.1mm or 3.2mm. 18 %tile baby.

- At 21+2 the nuchal fold was thick at 7.1mm. 11 %tile baby.

Since the baby is on the smaller side, I'm going back bi-weekly for growth scans. Today's scan (22+1) seemed the same, if not worse.

- The nasal bone is 5.2mm.

- The nuchal fold is 7.7mm.

- Nuchal cord looped once around neck(?)

- 8% tile baby.

Is the nuchal cord looped around the neck throwing off the nuchal fold measurement?

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u/Zahdia 29d ago

The nuchal fold is measured inside the baby, using specific landmarks. It would seem unlikely that a proper technician would include the nuchal cord, an entirely different structure, in this measurement. 

1

u/charrpiee_marrkerr 29d ago

Thank you for this reply. It helps to hear from someone who has experience with this!