Acardiac Twin: A rare Complication of Monochorionic Monoamniotic Twin  

Tanvi Vijay Tuteja , Kirti Rajesh Bendre , Geeta Madhav Niyogi
K.J. Somaiya Medical College, Mumbai, India
Author    Correspondence author
International Journal of Clinical Case Reports, 2016, Vol. 6, No. 6   doi: 10.5376/ijccr.2016.06.0006
Received: 15 Oct., 2015    Accepted: 22 Dec., 2015    Published: 30 Dec., 2015
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Tanvi Vijay Tuteja, Kirti Rajesh Bendre, and Geeta Madhav Niyogi, 2016, Acardiac Twin: A rare Complication of Monochorionic Monoamniotic Twin, International Journal of Clinical Case Reports, Vol.6, No. 6 1-3 (doi: 10.5376/ijccr.2016.06.0006)


Acardiac malformation, also known as twin reversed arterial perfusion (TRAP) sequence, is a unique complication of monochorionic twinning., occurring with a reported incidence of 1 in 35 000 deliveries. It is characterized by lack of heart development associated with a spectrum of malformations and anomalies in one of the twins, which is perfused in a paradoxical retrograde fashion by a structurally normal ‘pump’ twin through a single artery-to-artery anastomosis. There is usually a normally formed donor twin who has features of heart failure as well as a recipient twin who lacks a heart (acardius) and various other structures.It is caused in the embryo by a large artery-to-artery placental shunt, often also accompanied by a vein-to-vein shunt. The common complications include congestive cardiac failure in the pump twin, polyhydramnios and preterm delivery.

A cardiac twin; Mono chorionic twins; TRAP
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