Classification of ante-partum haemorrhage:

Grade Severity of coagulopathy Proportion of Placenta separated Estimated Blood Loss Fetal Distress Hypotension
I Mild Less than 1/6 Less than 250mls None None
II Moderate 1/6-1/2 250-1000mls Common Unlikely
III Severe More than 1/2 More than 1000mls Common Common