Optimal Management of Vasa Previa Study - A Retrospective Study

This is a multicenter retrospective study of women identified as having a vasa previa during
pregnancy or at the time of delivery who delivered between January 1, 2000 and December 31,
2012 at participating centers. The primary objective of the study is to describe techniques
utilized to screen for and diagnose vasa previa.

- In those cases that were diagnosed antenatally, to describe the different management
protocols utilized, correlate these management protocols with neonatal outcomes and
support the management protocol that offers optimal outcomes for both mother and
neonate.

- In those cases that were not diagnosed antenatally, to describe the clinical scenario
surrounding delivery and the neonatal outcomes. Review the ultrasound reports and
maternal characteristics to identify any potential risk factors for vasa previa that
could have been identified antenatally in attempt to improve neonatal outcomes in the
future.

- In all cases of diagnosed vasa previa (those diagnosed antepartum, intrapartum, and
postpartum), to describe the maternal characteristics and identify potential underlying
risk factors that may provide a basis for future screening recommendations and
protocols. Due to the rarity of this diagnosis, the study hopes to include 100-250
participants.

Inclusion Criteria:

- Patients with the diagnosed of vasa previa made either during the pregnancy via
ultrasound or at time of delivery via clinical and/or pathologic investigation.

- Patient delivered between January 2000 through December 2012

Exclusion Criteria:

- No diagnosis or confirmation of vasa previa

- Delivered either before January 1, 2000 or after December 31, 2012