title: The correlation of factors affecting the endometrial thickness with pregnancy outcome in the IUI cycles.
abstract: BACKGROUND
  Many studies have been carried out to understand the effect of endometrial thickness on the reproductive outcome while the factors affecting the pattern itself are still unknown.
  
  
  OBJECTIVE
  To determine the factors such as age and the number of follicles that could affect the endometrial thickness Materials and Methods: This study was conducted as a retrospective study on 680 infertile women considered for intrauterine insemination (IUI). IUI protocol was sequential regimen of clomid and gonadotropin. Endometrial thickness measurement was done on the day of HCG administration. Correlation between endometrial thickness and factors such as age, total follicle numbers, dominant follicle numbers, gonadotropine ampule numbers and pregnancy rate were assessed.
  
  
  RESULTS
  The mean endometrial thickness was 7.2±1.8 mm. The endometrium was thinner in older patients compared with younger ones. But in all age ranges pregnancy rate was higher in endometrial thickness 6< ET≤10 mm (p<0.05).
  
  
  CONCLUSIONS
  We did not find any correlation between age, number of follicles and gonadotropine ampoules with endometrial thickness but in all age ranges, there is a possibility of higher chance of pregnancy in endometrial thickness 6 < ET≤10 mm.
authors.affiliation: Afzalipour Clinical Center for Infertility, Kerman University of Medical Sciences, Afzalipour Hospital, Kerman, Iran.
authors.forename: Victoria
authors.initials: V
authors.lastname: Habibzadeh
authors.affiliation: Department of Anatomy and Embryology, Faculty of Medicine, Kerman University of Medical Sciences.
authors.forename: Sayed Noureddin
authors.initials: SN
authors.lastname: Nematolahi Mahani
authors.affiliation: Afzalipour Clinical Center for Infertility, Kerman University of Medical Sciences, Afzalipour Hospital, Kerman, Iran.
authors.forename: Hadiss
authors.initials: H
authors.lastname: Kamyab
keywords: Affecting factors; Endometrial thickness; Intrauterine insemination; Pregnancy rate