Shahida Perveen, Huma Quddusi, Shakeel Ahmed Faiz.
Twin reversed arterial perfusion sequence / sequence acephalus acardiac fetus.
Pak J Med Sci Jan ;24(4):869-71.

Twin reverse arterial perfusion (TRAP) sequence occurs only in a setting of a monochorionic gestation and complicates approximately 1% of monochorionic twin gestation. In the TRAP sequence the acardiac / acephalic twin receives all of its blood supply from the normal "pump" twin.

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