none 10.18502/ijrm.v17i7.4859 Knowledge E DMCC Knowledge E DMCC 7770 108782998 313405 1737711907 10.18502 2025-01-24T04:45:22Z 2019-08-01T06:07:08Z 1 International Journal of Reproductive BioMedicine (IJRM) IJRM 2476-3772 2476-4108 07 31 2019 17 7 Maryam Eftekhar Lida Saeed Masrooreh Hoseini Background: Embryo transfer (ET) is the last and the most clinical process in assisted reproductive technology cycle. It has been suggested that cervical mucus interacts with an adequate embryo transfer in different ways. A few studies showed that catheter rotation could discharge mucus entrapped in the embryo to neutralize embryo displacement. Objective: The aim of this present study was to compare the outcome of frozen embryo transfer (FET) based on catheter rotation during withdrawal. Materials and Methods: In this case-control study, the clinical documents of 240 women who experienced frozen embryo transfer cycles were reviewed. The subjects were divided into two groups (n = 120/each), including A) the rotation treatment group (360°) that underwent ET using catheter rotation and B) the control group including the subjects who experienced ET with no catheter rotation. Clinical and chemical pregnancies and implantation rates were compared between two groups. Results: Results showed that there is no significant difference between the basic clinical and demographic features of both groups (p > 0.05). A significant difference was observed in terms of the rate of chemical pregnancy between groups (21.7% vs 43.3%, p = 0.001 respectively). In addition, the rate of clinical pregnancy was significantly higher in study group than the control (33.35% vs 14.2%, p = 0.002, respectively). Conclusion: Our results demonstrated that catheter rotation during withdrawal increased the implantation rate and clinical pregnancy. 07 25 2019 481 486 1 https://doi.org/10.18502/knecrossmarkpolicy knepublishing.com true 10.18502/ijrm.v17i7.4859 https://knepublishing.com/index.php/ijrm/article/view/483%E2%80%93488 https://knepublishing.com/index.php/ijrm/article/download/483%E2%80%93488/9647 https://knepublishing.com/index.php/ijrm/article/download/483%E2%80%93488/9647 https://knepublishing.com/index.php/ijrm/article/download/483%E2%80%93488/9665 http://journals.ssu.ac.ir/ijrmnew/article-1-1580-en.html https://knepublishing.com/index.php/ijrm/article/view/4859 10.1201/9781351228244 Gardner DK, Weissman A, Howles CM, Shoham Z. Textbook of assisted reproductive techniques: laboratory and clinical perspectives. USA: Informa Healthcare; 2016. Neelam B, Mohanlal S, Namita K, Soni RR. Embryo transfer technic-role of transfer catheter. J Obstet Gynecol India 2005; 55: 146–150. 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