Vasa previa

Vasa previa represents a rare, but very dangerous condition, whose major complication is fetal exsanguination and death in utero. The diagnostic must be set antenatally by ultrasound using transvaginal probe and color Doppler. Most authors recommend the extraction of the fetus by cesarean section at 35 weeks of gestation. It is presented a case of vasa previa diagnosed at 22 weeks, where the extraction of the baby was delayed after 35 weeks of gestation. The mother was under constant surveillance, remained in the hospital after 36 weeks, the membranes was broken spontaneously at 37 weeks and an emergency cesarean section was performed.