Reversed A wave is a ductus venosus waveform. The reversed A wave between 16 to 20 weeks of gestation is associated with an increased risk of trisomy 21, gestational diabetes mellitus (GDM), and preeclampsia. When further prospective studies confirm its benefit, then DVD interrogation for trisomy 21 may be extended up to 20 weeks of gestation.
Hi, Welcome to icliniq.com. I read your query and can understand your concern. A reversed A wave in Doppler is associated with very high chance of trisomy in the baby.
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