Clinical characteristics of a novel "Type 3" vasa previa: case series at a single center.
Kyosuke KamijoTsutomu MiyamotoHirofumi AndoYasuhiro TanakaNorihiko KikuchiManaka ShinagawaSatoshi YamadaRyoichi AsakaChiho FuseyaSatoshi OhiraTanri ShiozawaPublished in: The journal of maternal-fetal & neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians (2021)
The present results suggest that Type 3 may account for a large proportion of vasa previa cases. Most Type 3 cases may present with only one fetal aberrant vessel of vasa previa and fewer risk factors, suggesting that the diagnosis of vasa previa may be more challenging in Type 3 cases than in the other types. Vasa previa with a venous vasa previa needs to be considered because of the difficulties associated with an antenatal diagnosis due to unclear imaging of the vasculature or the lack of specific color Doppler flow patterns. Pulsed Doppler imaging may be helpful for the diagnosis of these cases.