Abstract：
The incidence of ectopic pregnancy (EP) is 1.3-2.4%. Suspicion of EP starts after a positive serum pregnancy test and failure to visualize the intrauterine gestational sac (GS) by transvaginal sonography (TVS). About 88% of tubal EPs are diagnosed by absent intrauterine GS and the presence of an adnexal mass during TVS. Medical treatment of EP using methotrexate (MTX) is cost-effective with a similar success rate to surgical treatment. The presence of fetal heart beats, β-human chorionic gonadotropin >5000 mIU/mL, and EP size >4 cm are relative contraindications for using MTX in the treatment of EP.
摘要：
异位妊娠（EP）的发生率为1.3-2.4％。在血清妊娠试验阳性且无法通过经阴道超声检查（TVS）观察宫内孕囊（GS）后，开始怀疑EP。大约88％的输卵管EP是通过子宫内GS缺失和TVS期间附件肿块的存在而诊断的。使用甲氨蝶呤（MTX）进行EP的药物治疗具有成本效益，与手术治疗的成功率相似。胎儿心跳的存在，β-人绒毛膜促性腺激素>5000mIU/mL，和EP尺寸>4cm是使用MTX治疗EP的相对禁忌症。
