异位妊娠(EP)是妇产科常见病,是严重威胁妇女健康的疾病之一,由于其大量内出血可以导致孕妇死亡,所以一直被视为具有高度危险性的早期妊娠并发症。近年来,异位妊娠发病率不断上升,占所有已知妊娠总数的1%。随着快速敏感血β-HCG检测技术问世和超声检查尤其是阴道超声的进展,80% Ectopic pregnancy (EP) is a common disease in obstetrics and gynecology. It is one of the most serious diseases that threaten the health of women. Because of its large amount of internal bleeding, it can lead to the death of pregnant women, so it has always been considered as a risky early pregnancy complication. In recent years, the incidence of ectopic pregnancy continues to rise, accounting for 1% of all known pregnancies. With the advent of rapid sensitive blood β-HCG detection technology and the progress of ultrasonography, especially vaginal ultrasound, 80%