• Robert Gagnon, Lucie Morin, Stephen Bly, Kimberly Butt, Yvonne M Cargil, Nanette Denis, Marja Anne Hietala-Coyle, Kenneth Ian Lim, Annie Ouellet, Maria-Hélène Racicot, Shia Salem, Lynda Hudon, Melanie Basso, Hayley Bos, Marie-France Delisle, Dan Farine, Kirsten Grabowska, Savas Menticoglou, William Mundle, Lynn Murphy-Kaulbeck, Tracy Pressey, Anne Roggensack, Diagnostic Imaging Committee, and Maternal Fetal Medicine Committee.
• Int J Gynaecol Obstet. 2010 Jan 1;108(1):85-9.

ObjectivesTo describe the etiology of vasa previa and the risk factors and associated condition, to identify the various clinical presentations of vasa previa, to describe the ultrasound tools used in its diagnosis, and to describe the management of vasa previa.OutcomesReduction of perinatal mortality, short-term neonatal morbidity, long-term infant morbidity, and short-term and long-term maternal morbidity and mortality.EvidencePublished literature on randomized trials prospective cohort studies, and selected retrospective cohort studies was retrieved through searches of PubMed or Medline, CINAHL, and the Cochrane Library, using appropriate controlled vocabulary (e.g., selected epidemiological studies comparing delivery by Caesarean section with vaginal delivery studies comparing outcomes when vasa previa is diagnosed antenatally vs.intrapartum) and key words (e.g. vasa previa). Results were restricted to systematic reviews, randomized control trials/controlled clinical trials, and observational studies. Searches were updated on a regular basis and incorporated into the guideline to October 1, 2008. Grey (unpublished) literature was identified through searching the websites of health technology assessment and health technology assessment-related agencies,clinical practice guideline collections, clinical trial registries, and from national and international medical specialty societies.ValuesThe evidence collected was reviewed by the Diagnostic Imaging Committee and the Maternal Fetal Medicine Committee of the Society of Obstetricians and Gynaecologists of Canada (SOGC) and quantified using the evaluation of evidence guidelines developed by the Canadian Task Force on Preventive Health Care.Benefits, Harms, And CostsThe benefit expected from this guideline is facilitation of optimal and uniform care for pregnancies complicated by vasa previa.SponsorsThe Society of Obstetricians and Gynaecologists of Canada.

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