<unk>  is the obstruction of blood flow through the<unk> <unk>  secondary to pressure from an external object or misalignment of the<unk>  itself.<unk><unk>  happens in about one in 10 deliveries.
Umbilical cord compression
Foetal cerebral redistribution
Positional asphyxia
Placental insufficiency
Intrauterine hypoxia
Persistent fetal circulation
Fetal-maternal haemorrhage
Perinatal asphyxia