Vasa previa: diagnóstico prenatal ecográfico y conducta obstétrica

Abstract

Vasa previa is an uncommon obstetric complication in which aberrant vessels coming from the placenta or the umbilical cord cross over the internal cervical os, thus appearing immediately before the foetal presentation. If it is not diagnosed before the onset of labour or rupture of membranes, the perinatal outcome is general very poor. We report a case of vasa previa which was prenatally diagnosed by ultrasound in a woman presenting with antepartum bleeding and a low-lying bilobular placenta in the third trimester. The aetiology and clinical management of this condition are discussed.