A case of sudden foetal death due to vasa praevia is reported. The main problem is early ante-partum diagnosis. Three methods are discussed.
(1) Tests to recognize foetal blood as a routine in ante-partum haemorrhage;
(2) amnioscopy before amniotomy; in foetal irregularity or bradycardia; in ante-partum haemorrhage;
(3) tests for foetal bradycardia in early labour as a part of the routine abdominal examination.