Twin reversed arterial perfusion sequence / sequence acephalus acardiac fetus

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

Postpartum cortical blindness

A 30-years-old third gravida with previous normal pregnancies and an unremarkable prenatal course had an emergency lower segment caesarean section at a periphery hospital for failure of labour to progress. She developed bilateral cortical blindness immediately after recovery from anesthesia due to cerebral angiopathy shown by CT and MR scan as cortical infarct cerebral angiopathy, which is a rare complication of a normal pregnancy