This is a multicenter retrospective observational study of women diagnosed with a vasa previa during pregnancy or at delivery who delivered between 2000 and 2012. The study hopes to be able to describe techniques utilized to screen for and diagnose vasa previa as well as to describe the maternal characteristics and identify potential underlying risk factors that may provide a basis for future screening recommendations for vasa previa and treatment protocols.
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Diagnostic Profile of Techniques Utilized to Screen for and Diagnose Vasa Previa During Pregnancy.
Timeframe: Participants will be followed from time of diagnosis of vasa previa until the baby is born, an expected time frame of 9 months
Gestational Age at Time of Diagnosis Stratified by Diagnostic Profile.
Timeframe: Participants will be followed from time of diagnosis of vasa previa during the second trimester up until delivery.
Mode of Delivery Stratified by Diagnostic Profile.
Timeframe: At birth.
Gestational Age of Infant at Birth
Timeframe: At birth.