title: Evaluation of clomiphene citrate and human chorionic gonadotropin treatment: a prospective, randomized, crossover study during intrauterine insemination cycles.
abstract: OBJECTIVE
  To test the hypothesis that in couples undergoing IUI, actively managed cycles using clomiphene citrate (CC) stimulation, ultrasound monitoring, and hCG timing will result in increased pregnancy rate (PR) per cycle compared with unstimulated urinary LH-timed cycles.
  
  
  METHODS
  Fifty-six couples with unexplained infertility (n = 26) or male factor infertility (n = 30) participated in the study.
  
  
  METHODS
  Tertiary academic medical center.
  
  
  METHODS
  Prospective, randomized, crossover. Couples were randomized initially to one of the two study groups (treatment A: LH-timed IUI; treatment B: CC-stimulated, hCG-timed IUI). If no pregnancy occurred, each couple alternated between the two regimens during subsequent cycles, up to a total of four cycles.
  
  
  RESULTS
  Twenty-nine couples completed the study and the analysis of 95 cycles revealed that among the male factor infertility group, one pregnancy occurred during the 26 cycles of each treatment group (PR per cycle of 3.9% for both treatment groups). In contrast, among the unexplained infertility group, there was a marked difference in the effect of treatments. During treatment A only one pregnancy occurred in 20 cycles (PR of 5% per cycle) whereas during treatment B, six pregnancies occurred in 23 cycles (PR of 26.1% per cycle).
  
  
  CONCLUSIONS
  If IUI is chosen as the treatment modality in unexplained infertility, the addition of active ovulation management that includes CC stimulation, ultrasound monitoring of folliculogenesis, and hCG timing of ovulation increases the PR per cycle. In couples with male infertility, PR per cycle is low and is apparently not affected by the addition of active ovulation management.
authors.affiliation: Department of Obstetrics and Gynecology, University of Texas Southwestern Medical Center at Dallas.
authors.forename: A
authors.initials: A
authors.lastname: Arici
authors.forename: W
authors.initials: W
authors.lastname: Byrd
authors.forename: K
authors.initials: K
authors.lastname: Bradshaw
authors.forename: W H
authors.initials: WH
authors.lastname: Kutteh
authors.forename: P
authors.initials: P
authors.lastname: Marshburn
authors.forename: B R
authors.initials: BR
authors.lastname: Carr
mesh_terms: D000328:Adult; D006063:Chorionic Gonadotropin / Q000627:therapeutic use*; D002996:Clomiphene / Q000627:therapeutic use*; D005260:Female; D006801:Humans; D007246:Infertility / Q000628:therapy*; D007248:Infertility, Male / Q000628:therapy; D007315:Insemination, Artificial; D008297:Male; D008875:Middle Aged; D011247:Pregnancy; D011446:Prospective Studies
chemical_list: D006063:Chorionic Gonadotropin; D002996:Clomiphene