Acute intrapartum twin-twin transfusion. A case report.

A rare case of acute intrapartum twin-twin transfusion occurred. The well-recognized criteria of long-standing chronic twin-twin transfusion were absent. Although a cesarean section was performed for obstetric reasons, the hyperperfused twin, A, died intrapartum. Twin B, the hypoperfused twin, although liveborn, died neonatally of renal failure attributed to renal cortical necrosis as a sequel to hypotension.