title: Relationship between Endometrial Thickness and In Vitro Fertilization-Intracytoplasmic Sperm Injection Outcome.
abstract: BACKGROUND
  This study assessed the relationship between endometrial thickness on day of human chorionic gonadotropin (hCG) administration and in vitro fertilizationintracytoplasmic sperm injection (IVF-ICSI).
  
  
  METHODS
  This prospective cross-sectional study included a total of 593 women. Patients were treated with either the agonist or antagonist protocol according to the clinician's and patient's preference. Endometrial thickness on the hCG day was measured by transvaginal ultrasonography (TV-USG). Patients were divided into four groups according to endometrial lines, as follows: <7 mm (group 1), 7-10 mm (group 2), 10-14 mm (group 3), and >14 mm (group 4).
  
  
  RESULTS
  Implantation rate (IR), clinical pregnancy rate (CPR), and ongoing pregnancy rate (OPR) were significantly lower in group 1 than the other three groups (p<0.05). However, there was no significant difference among groups 2, 3 and 4. Although the endometrial line in the agonist protocol was higher than in the antagonist protocol, the difference was not statistically significant.
  
  
  CONCLUSIONS
  The chance of pregnancy appears to be lower in individuals with endometrial thickness less than 7 mm compared with those of higher value.
authors: Acibadem In Vitro Fertilization Center, Kayseri, Turkey.
authors: Turgut
authors: T
authors: Aydin
authors: Department of Obstetrics and Gynecology, Bozok University Medical Faculty, Yozgat, Turkey.
authors: Mustafa
authors: M
authors: Kara
authors: Kayseri In Vitro Fertilization Center, Kayseri, Turkey.
authors: Turktekin
authors: T
authors: Nurettin
keywords: Endometrial Thickness; IVF-ICSI; Pregnancy Rate