Roshan Nikbakht - ۱ Fertility, Infertility and Perinatology Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
mahvash zargar - ۱ Fertility, Infertility and Perinatology Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
farideh morammezi - University of Medical Sciences, Ahvaz, Iran
asma motaharifard - ۱ Fertility, Infertility and Perinatology Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
Maryam Seyedtabib - University of Medical Sciences, Ahvaz, Iran

Background: Frozen embryo replacement (FER) cycle is a procedure that assists in vitro fertilization (IVF) outcome by using the storage and transfer of excess embryos. This study evaluated the success of FER using spinnbarkeit and endometrial thickness.Materials and Methods: This cross-sectional study was performed on ۹۷ infertile women at the Imam Khomeini hospital of Ahvaz, from March ۲۰۱۹ to March ۲۰۲۰. Endometrium was prepared with Estradiol valerate from the third day of menstruation and followed by serial vaginal ultrasound till the thickness of the endometrium attain ۷ millimeter to ۸ millimeter. The cervical secretions were collected from the external os and were estimated based on centimeters. Also, endometrial thickness was recorded.Results: no substantial difference between endometrial thickness and spinnbarkeit in the FER cycles with pregnancy outcomes was observed (P>۰.۰۵).Conclusion: Some variables such as endometrial thickness, spinnbarkiet, estradiol dose intake, and quality of embryos have no relationship with the success of FER cycles.

infertility, Frozen embryo replacement cycles, Spinnbarkeit, Endometrial Thickness