异位妊娠是早孕期间威胁孕妇生命的主要因素之一,其中以输卵管妊娠最多见,近年来发病率有明显增高的趋势。随着高灵敏度放射免疫法测定血清β-hCG及阴道超声检查的广泛应用,更多的输卵管妊娠在破裂前被诊断,为有生育要求的患者进行保守性手术提供了有利条件。但随之而来的持续性异位妊娠(PEP)[1]的发生率也相应增加,它是导致再次治疗甚至剖腹手术的原因,及时预防及诊断PEP成为临床研 Ectopic pregnancy is one of the main factors threatening the life of pregnant women during the first trimester, of which the most common tubal pregnancy, the incidence in recent years have significantly increased. With the wide range of applications of high-sensitivity radioimmunoassay for serum β-hCG and vaginal ultrasonography, more tubal pregnancies are diagnosed before rupture, providing favorable conditions for conservative surgery in patients with reproductive requirements. However, the subsequent incidence of persistent ectopic pregnancy (PEP) [1] is also correspondingly increased, which is the cause of re-treatment and even laparotomy. It is necessary to prevent and diagnose PEP as clinical research