RT Journal Article
SR Electronic
T1 Twin pregnancy complicated by vasa previa
JF BMJ Case Reports
FD BMJ Publishing Group Ltd
SP bcr2012006484
DO 10.1136/bcr-2012-006484
VO 2012
A1 Cátia Carnide
A1 Mónica Jerónimo
A1 Dolores Faria
A1 Isabel Santos Silva
YR 2012
UL http://casereports.bmj.com/content/2012/bcr-2012-006484.abstract
AB Perinatal morbidity and mortality rates for vasa previa are high when it is not diagnosed antenatally. In this report, a case of vasa previa in a twin pregnancy was diagnosed postnatally, which leads to complications with the first twin. Serial ultrasound during pregnancy did not diagnose a bilobed placenta, a velamentous insertion of the umbilical cord or vasa previa. At 37 weeks, vaginal bleeding was detected in the expulsive stage and vaginal-assisted delivery of both fetuses was undertaken. The first fetus was born pale and anaemic, and required a blood transfusion and therapeutic hypothermia. A high risk of vasa previa is associated with placentas with low-lying insertion, bilobed placentas, velamentous insertions of the umbilical cord, multiple pregnancy and pregnancies conceived after the use of assisted reproductive technologies. Transvaginal ultrasound screening with colour flow Doppler can allow antenatal diagnoses of vasa previa and an improved outcome.