The Timing of Fetal-Maternal Haemorrhage: Clinical and Forensic Implications

David J R Hutchon

Abstract

The transfer or haemorrhage of a small amount of fetal blood into the mother’s circulation throughout most of pregnancy is common. Larger haemorrhage can sometimes be detected immediately post-partum having occurred during the third stage of labour. It is likely that early cord clamping can sometimes be the cause of a massive fetal maternal haemorrhage with the haemorrhage actually taking place after the cord is clamped. The rationale and implications are presented.