TRAPIST- Early versus late intervention for twin reversed arterial perfusion sequence: an open-label randomized controlled multi-center trial

The purpose of this study is to examine the outcomes in the pump twin of a pregnant woman diagnosed with twin reversed arterial perfusion when comparing an intervention prior to 14 weeks (early intervention) to the standard intervention after 16 weeks (late intervention). Babies will be followed for 2 years after birth in order to obtain a greater understanding about when the best time to intervene may be. For more information about the study, please contact the study’s Principal Investigator, Anthony Johnson, DO, at or 713-486-6552, or The Fetal Center at 832-325-7520.