title: Assessment of uterine artery blood flow on the day of human chorionic gonadotropin administration by transvaginal color Doppler ultrasound in an in vitro fertilization program.
abstract: OBJECTIVE
  To assess whether measurement of uterine artery blood flow impedance (the pulsatility index) as determined by transvaginal color Doppler ultrasound on the day of hCG administration in patients undergoing IVF can predict pregnancy and implantation rates.
  
  
  METHODS
  Prospective observational study of women undergoing IVF.
  
  
  METHODS
  A tertiary referral center for assisted reproduction.
  
  
  METHODS
  One hundred thirty-five patients undergoing 139 IVF cycles.
  
  
  METHODS
  Transvaginal color Doppler assessment of uterine artery pulsatility index on the day of administration of hCG.
  
  
  METHODS
  Mean pulsatility index of the left and right uterine arteries, pregnancy rate, and embryo implantation rate.
  
  
  RESULTS
  The patients were grouped into pregnant and nonpregnant groups and according to whether the pulsatility index was low (1.00 to 1.99), medium (2.00 to 2.99), or high (> or = 3.00). The pregnancy rates were 13.8%, 34.7%, and 14.3% for the low, medium, and high pulsatility index groups, respectively, and were not significantly different. The implantation rates for the same groups were 10.7%, 16.3%, and 5.4%, respectively. The implantation rate for all the patients with pulsatility index < 3.00 (and especially 2.00 to 2.99) was significantly higher than the high pulsatility index group.
  
  
  CONCLUSIONS
  The study suggests that the measurement of uterine artery pulsatility index on the day of hCG predicts subsequent implantation rates. It may allow the administration of hCG to be deferred until uterine artery pulsatility index falls to < 3.00, which may result in improved implantation rates.
authors.affiliation: Academic Department of Obstetrics and Gynecology, King's College School of Medicine and Dentistry, University of London, United Kingdom.
authors.forename: J
authors.initials: J
authors.lastname: Zaidi
authors.forename: R
authors.initials: R
authors.lastname: Pittrof
authors.forename: A
authors.initials: A
authors.lastname: Shaker
authors.forename: A
authors.initials: A
authors.lastname: Kyei-Mensah
authors.forename: S
authors.initials: S
authors.lastname: Campbell
authors.forename: S L
authors.initials: SL
authors.lastname: Tan
mesh_terms: D000328:Adult; D001158:Arteries; D006063:Chorionic Gonadotropin / Q000627:therapeutic use*; D005260:Female; D005307:Fertilization in Vitro; D006801:Humans; D011247:Pregnancy / Q000706:statistics & numerical data; D011446:Prospective Studies; D012039:Regional Blood Flow; D018615:Ultrasonography, Doppler, Color / Q000379:methods; D014599:Uterus / Q000098:blood supply* / Q000000981:diagnostic imaging*; D014621:Vagina
chemical_list: D006063:Chorionic Gonadotropin