TWIN REVERSED ARTERIAL PERFUSION SEQUENCE (TRAP);

A CASE REPORT

Abstract

Twin reversed arterial perfusion sequence (TRAP sequence) is a condition that
occurs only in identical twins that share a placenta (monochorionic), in which one twin lacking
a functioning cardiac system “acardiac monster” receives blood from the normally developing
twin called the “pump twin”. This places an enormous demand on the heart putting the pump
twin at risk for cardiac failure. Left untreated, the pump twin will die in 50 percent to 75 percent
of cases. Here we present the case report of a 20 years old G2P1at 32 weeks POG with a
monochorionic twin pregnancy. One of the twins was “acardiac acephalous” and the other a
“pump twin” with mild hydrocephalous.