Gretz E, Quagliarello J
Am J Obstet Gynecol. 1987 Apr;156(4):940-1. doi: 10.1016/0002-9378(87)90361-9.
Declining values of the beta-subunit of human chorionic gonadotropin may be associated with ectopic pregnancy or missed abortion. Sonography may not always establish a definitive diagnosis. A case is presented where expectant management of declining levels resulted in rupture of an ectopic pregnancy. Declining values of the beta-subunit of human chorionic gonadotropin should not give the clinician a false sense of security in managing first-trimester pregnancy disorders.
人绒毛膜促性腺激素β亚基水平下降可能与异位妊娠或稽留流产有关。超声检查不一定总能做出明确诊断。本文报告一例因对人绒毛膜促性腺激素β亚基水平下降进行期待治疗而导致异位妊娠破裂的病例。在处理孕早期妊娠疾病时，人绒毛膜促性腺激素β亚基水平下降不应给临床医生带来错误的安全感。
