title: [Dynamic monitoring of serum human chorionic gonadotropin beta-subunit levels for early diagnosis of ectopic pregnancy].
abstract: OBJECTIVE
  To assess the value of monitoring serum human chorionic gonadotropin beta-subunit (beta-HCG) level changes in early diagnosis of ectopic pregnancy.
  
  
  METHODS
  Totalling 106 cases of ectopic pregnancy and 69 cases of threatened abortion were included in the study. Blood samples were collected to examine beta-HCG levels, which was repeated 2-3 days later.
  
  
  RESULTS
  Initial serum beta-HCG levels of the women with ectopic pregnancy and different were significantly lower than those in women with threatened abortion (P<0.05), and the increment rate of serum beta-HCG in the former was also significantly lower (P<0.05).
  
  
  CONCLUSIONS
  Compared with single-time serum beta-HCG detection, dynamic monitoring of serum beta-HCG provides more important and reliable evidence for early diagnosis of ectopic pregnancy. Transvaginal ultrasonography and in should also be considered in the clinical analysis.
authors.affiliation: Department of Obstetrics and Gynecology, Guangzhou Red-Cross Hospital/Forth Affiliated Hospital of Jinan University, Guangzhou 510220, China.
authors.forename: Ying-yuan
authors.initials: YY
authors.lastname: Huang
authors.forename: Min-duan
authors.initials: MD
authors.lastname: Deng
authors.forename: Cui-liu
authors.initials: CL
authors.lastname: Zhao
authors.forename: Hai
authors.initials: H
authors.lastname: Ou
mesh_terms: D000328:Adult; D018997:Chorionic Gonadotropin, beta Subunit, Human / Q000097:blood*; D042241:Early Diagnosis; D005260:Female; D006801:Humans; D008991:Monitoring, Physiologic / Q000379:methods; D011247:Pregnancy; D011271:Pregnancy, Ectopic / Q000097:blood / Q000175:diagnosis* / Q000000981:diagnostic imaging; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D014463:Ultrasonography
chemical_list: D018997:Chorionic Gonadotropin, beta Subunit, Human