États des lieux et expertise de l'usage hors AMM du méthotrexate en gynécologie-obstétrique : travail du CNGOF

In the absence of contraindication, methotrexate by intramuscular unique injection of 1 mg/kg or 50 mg/m2 is the medical treatment recommended for tubal ectopic pregnancy (EP; LE1). It can be renewed once, at the same dose, according to hCG rates decrease. The pretherapeutic biological assessment contains blood cells numeration, renal and hepatic function. Methotrexate therapy constitutes an alternative conservative treatment to laparoscopic salpingotomy for non-complicated tubal EP (LE1) with hCG level < 5000 UI/L (LE2). When the rates of hCG are < 1000 UI and or presented a spontaneous decreasing kinetics, the simple prospect (LE2) is preferred. It is recommended to use intramuscular methotrexate in case of surgical conservative treatment failure or more prematurely if the follow-up is not possible (LE3). Except in particular cases there is no indication to use methotrexate in local injection under sonographic control in usual tubal EP (LE2). The use of in situ injection methotrexate is an option to handle the cervical, interstitial or on caesareans scar pregnancies (LE2). In front of a persistent undetermined location pregnancy, after more than 10 days of survey, in an asymptomatic woman and/or at rate of hCG > 2000 UI/L, the systematic treatment by methotrexate is an option. The methotrexate is not indicated for first trimester termination of pregnancy or miscarriage neither in placentas accreta nor in association with other treatments such myfegine or potassium.