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Updated: Jul 18, 2026
Guide Wire Assisted Catheterization and Colored Dye Injection for Vascular Mapping of Monochorionic Twin Placentas
Published on: September 5, 2011
Twin reversed arterial perfusion (TRAP) sequence and placenta accreta
Maureen Cohen Bacry1, Marion Le Hegarat1, Marc Althuser1
1Department of Gynecology and Obstetrics, Hôpital Couple Enfant, Université Grenoble Alpes, La Tronche, France.
TRAP sequence is a rare and severe complication of monozygotic pregnancies. We present the case of a 35 years old woman, diagnosed with a TRAP sequence for her second pregnancy, whose delivery was complicated of a severe hemorrhage from an unknown placenta accreta, making a hysterectomy necessary. If abnormal placentation is more frequent in multiple pregnancies, the physiopathology of TRAP sequence could explain the association with accreta placentation. One should keep in mind that a rare pathology can hide another.
TRAP sequence is a rare and severe complication of monozygotic pregnancies. We present the case of a 35 years old woman, diagnosed with a TRAP sequence for her second pregnancy, whose delivery was complicated of a severe hemorrhage from an unknown placenta accreta, making a hysterectomy necessary. If abnormal placentation is more frequent in multiple pregnancies, the physiopathology of TRAP sequence could explain the association with accreta placentation. One should keep in mind that a rare pathology can hide another.
