Key result
Twin reversed arterial perfusion (TRAP) syndrome is invariably fatal for the abnormal twin and carries a 50-75% mortality rate for the normal co-twin.
Early ultrasound diagnosis of TRAP syndrome is essential to monitor the normal twin for congestive heart failure and to determine the need for invasive therapeutic interventions.
High mortality for the normal twin in TRAP syndrome warrants serial monitoring; leaves open optimal intervention strategies.
Twin reversed arterial perfusion (TRAP) syndrome is a rare but severe complication of monozygotic monochorionic twin pregnancies. The outcome is invariably fatal for the abnormal twins and for 50-75% of the normal co-twins. The prenatal diagnosis of the TRAP always has to be presumed in a multiple pregnancy within which a twin pair grows whenever cardiac activity can not be proved echographically. We present discuss--based upon literature research--pathogenic mechanisms, pathologic-anatomic, echographic diagnosis and management of these high-risk pregnancies.
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Malinowski et al. (1998) conducted a review in Twin reversed arterial perfusion (TRAP) syndrome. Twin reversed arterial perfusion (TRAP) syndrome was evaluated. Twin reversed arterial perfusion (TRAP) syndrome is invariably fatal for the abnormal twin and carries a 50-75% mortality rate for the normal co-twin.
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