The investigators wish to identify potential factors predicting failure of second-line drug treatment (sulproston (Nalador®)): risk factors and factors linked to a failure to take initial care for PPH.

A better understanding of the aggravating factors of HPP and more particularly the factors inherent to the initial care would make it possible to think of ways to improve practices.

Inclusion Criteria:

• Major subject (≥18 years old)
• Subject having given birth at HUS or CHU Poissy Saint-Germain-en Laye between 01/01/2019 and 31/12/2020
• Subject having presented a postpartum haemorrhage treated with Sulprostone
• Subject not having expressed his opposition, after information, to the reuse of his data for the purposes of this research

Exclusion Criteria:

• Subject having expressed opposition to participating in the study
• Subject under guardianship or guardianship
• Subject under safeguard of justice

Adult person (≥18 years old) who gave birth at HUS or at Poissy Saint-Germain-en Laye university hospital between 01/01/2019 and 12/31/2020 and having presented a postpartum hemorrhage treated with Sulprostone