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Updated: Apr 10, 2026

Guide Wire Assisted Catheterization and Colored Dye Injection for Vascular Mapping of Monochorionic Twin Placentas
Published on: September 5, 2011
Iosifina Stergiotou1, Virginia Borobio1, Mar Bennasar1
1a Prenatal Diagnosis Unit, Institute Clinic of Gynecology, Obstetrics and Neonatology (ICGON), Hospital Clinic, University of Barcelona , Barcelona , Catalonia , Spain.
First trimester screening for fetal aneuploidies relies on chorionic villus sampling (CVS). This study proposes practical clinical guidelines for the transcervical CVS approach, ensuring sample quality and comparable safety to other methods.
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