" /> Twin Reversed Arterial Perfusion Sequence Malformation - CISMeF





Preferred Label : Twin Reversed Arterial Perfusion Sequence Malformation;

NCIt synonyms : Acardiac Twin; TRAP Sequence;

NCIt related terms : Acardiac Malformation;

NCIt definition : A severe form of twin-twin transfusion syndrome that occurs in monochorionic pregnancies. The normal twin (pump twin) supplies the blood flow to its sibling that lacks heart or brain or both (acardiac/acephalic twin). Untreated, it may lead to the demise of the pump twin in some cases.;

Alternative definition : NICHD: A condition which occurs in monozygotic twins in which one of the fetuses supplies the majority of the cardiac output to its co-twin through its umbilical artery. The recipient twin has only rudimentary organs and structure and is not viable.;

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28/07/2025


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