부산대학교 도서관

The acardiac twin is a rare congenital abnormality that affects one percent of the monozygotic monochoryonic twins and one in 35,000 pregnancies overall. This rare condition is also known as twin reversed arterial perfusion sequence (TRAP), because the acardiac twin (recipient twin) is perfused by its co-twin or pump twin via placental arterial and venous anastomoses. Due to the suplimentary effort of the pump twin to assure a systemic circulation for the recipient acardiac twin, the first may develop cardiac failure, the perinatal mortality varying from 50 to 75%. Another common event in case of an acardiac twin is the preterm delivery. We report a case of an acardiac twin, whose peculiarities that the pregnancy was carried for 36 weeks, more than the gestational ages reported in the literature, and the pump twin was in perfect health. [ABSTRACT FROM AUTHOR]