Monochorionic twins facts Flashcards
(4 cards)
1
Q
% TTS which complicates monochorionic pregnancies
A
10-15%
2
Q
Most likely type of anastomosis
A
Unidirectional artery - vein
3
Q
USS criteria for TTS
A
- One placenta
- oligohydramnios 8 cm at 20/40, or > 10 cm after 20/40
- ## discordant bladder appearance
4
Q
NT/CRL discordance and TTS
A
- > 10% and 95th centile predictive of perinatal death by 50%
- Discordance in early 2nd trimester biometry and CRL >10% ass with TTS
