Since the medical management of ectopic pregnancy (EP) was introduced by Dr. Steven Ory, and published in 1986 in the American Journal of Obstetrics and Gynecology, diagnostic criteria have been established to predict its successful medical treatment with methotrexate (MTX), including its maximum diameter (MaxDia), its associated human chorionic gonadotropin (hCG) level, and whether there was identified cardiac motion (CM).