Inclusion Criteria:  Any adult patient presenting to the gynecological emergency department of the Paule de Viguier Hospital in Toulouse for whom a diagnosis of an arrested pregnancy in the first trimester is made Whose cranio-caudal length of the embryo measured by ultrasound is less than 25 mm or having a clear egg Having agreed to the study (written or verbal) after clear and fair information Who understands and reads French  Exclusion Criteria:  Medical contraindication to treatment with Mifégyne® or MisoOne® Hemodynamically unstable patient requiring urgent surgical treatment. Protected adult patient (guardianship, curatorship, safeguard of justice)