Study of Biological Determinants of Bleeding Postpartum

Study of Biological Determinants of Bleeding Postpartum : Predictive Role in the Number of Immature Platelets

At the entry of the delivery room, a standard blood analysis will be performed (Blood count, PT, aPTT, Fibrinogen, and D-Dimer) for each women (if they are agree), according to the center's practices.

The percentage of the immature platelets is a an additional parameter on the hemogram.

The clinical assessments (recorded in medical records) and biological values will be used to determine if there is a correlation between these data and the occurrence of postpartum hemorrhage.

Inclusion Criteria:

• Woman giving birth in a maternity of Finistère

Exclusion Criteria:

• Refuse to participate in the study