Vasa previa (VP) is defined as fetal vessels unsupported by either placenta or umbilical cord coursing within the membranes in close proximity to the internal cervical os [1]. The membranous fetal vessels can either lead from the placenta to a velamentous cord insertion (type 1) or connect the main bulk of the placenta to a succenturiate lobe (type 2) [2]. The localization of the membranous fet...

Vasa previa (VP) is defined as fetal vessels unsupported by either placenta or umbilical cord coursing within the membranes in close proximity to the internal cervical os [1]. The membranous fetal vessels can either lead from the placenta to a velamentous cord insertion (type 1) or connect the main bulk of the placenta to a succenturiate lobe (type 2) [2]. The localization of the membranous fet...

Introduction The presence of vasa previa carries a high risk for severe fetal morbidity and mortality due to bleeding caused by injury unprotected vessels when rupture membranes occurs. Previously, it has been shown that prenatal diagnosis significantly improves the outcome. However, systematic screening is not generally performed clinical studies demonstrating performance in routine practice a...