TRAP sequence in a monochorionic diamniotic pregnancy: a rare and unpredictable syndrome

Twin reverse arterial perfusion (TRAP) sequence is a rare complication, occurring in one out of 35,000 monochorionic pregnancies, due to early vascular anastomosis between the ‘acardiac twin’ and the ‘pump twin’, causing retrograde vascularization of non-oxygenated blood and involution of the acardiac twin’s upper pole [1]. A circulatory overload is hence imposed on the pump twin, who must alone maintain twice the blood flow, triggering a risk of heart failure.

Source: European Journal of Obstetrics, Gynecology, and Reproductive Biology - February 4, 2020 Category: OBGYN Authors: Magalie Barbier, Melinda Petrovic, Pauline Simon, Samuel Khiat, Claude D ’Ercole, Julie Blanc Tags: Correspondence Source Type: research