Comparison of letrozole with gonadotropin-releasing hormone agonist in frozen embryo transfer after recurrent implantation failure: An RCT
Background: The use of frozen embryo transfer (FET) is increasing worldwide in the treatment of infertility by in vitro fertilization. Different methods of endometrial preparation for FET have been suggested.Objective: The aim of this study was to compare the pregnancy outcomes after treatment with...
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| Format: | Article |
| Language: | English |
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Shahid Sadoughi University of Medical Sciences
2020-02-01
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| Series: | International Journal of Reproductive BioMedicine |
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| Online Access: | https://doi.org/10.18502/ijrm.v18i2.6417 |
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| author | Nayere Khadem Ghaebi Malihe Mahmoudiniya Mona Najaf Najafi Elnaz Zohdi Matin Attaran |
| author_facet | Nayere Khadem Ghaebi Malihe Mahmoudiniya Mona Najaf Najafi Elnaz Zohdi Matin Attaran |
| author_sort | Nayere Khadem Ghaebi |
| collection | DOAJ |
| description | Background: The use of frozen embryo transfer (FET) is increasing worldwide in the treatment of infertility by in vitro fertilization. Different methods of endometrial preparation for FET have been suggested.Objective: The aim of this study was to compare the pregnancy outcomes after treatment with letrozole and those after treatment with the combination of gonadotropin-releasing hormone (GnRH) agonist and estradiol in FET.Materials and Methods: This randomized controlled trial study was conducted on 142 infertile women with a history of previous FET failure. Participants were randomly assigned to two groups (n = 71 each). The GnRH group received 500 µg of buserelin plus 4mg estradiol (which increased to 8 mg if endometrial thickness was less than 5 mm), and the letrozole group received 5 mg of letrozole plus 75 IU of recombinant human follicle-stimulating hormone). At least two high-quality embryos were transferred to each subject in both groups. The outcome measures were clinical pregnancy rate and fetal heart rate detection.Results: Subjects in the study groups had similar demographic characteristics and baseline clinical condition. Mean endometrial thickness in the letrozole and GnRH agonist groups were 8.90 ± 0.88 mm and 8.99 ± 0.85 mm, respectively (p = 0.57). The number of positive results of the beta human chorionic gonadotropin test and detection of fetal heartbeat were not significantly different between the groups (p > 0.05).Conclusion: The administration of letrozole and GnRH may produce similar pregnancy outcomes in FET. |
| first_indexed | 2024-12-22T17:19:48Z |
| format | Article |
| id | doaj.art-8009ed5ac05d47439b888b240d02936e |
| institution | Directory Open Access Journal |
| issn | 2476-3772 |
| language | English |
| last_indexed | 2024-12-22T17:19:48Z |
| publishDate | 2020-02-01 |
| publisher | Shahid Sadoughi University of Medical Sciences |
| record_format | Article |
| series | International Journal of Reproductive BioMedicine |
| spelling | doaj.art-8009ed5ac05d47439b888b240d02936e2022-12-21T18:18:53ZengShahid Sadoughi University of Medical SciencesInternational Journal of Reproductive BioMedicine2476-37722020-02-011810511210.18502/ijrm.v18i2.6417ijrm.v18i2.6417Comparison of letrozole with gonadotropin-releasing hormone agonist in frozen embryo transfer after recurrent implantation failure: An RCTNayere Khadem Ghaebi0Malihe Mahmoudiniya1Mona Najaf Najafi2Elnaz Zohdi3Matin Attaran4 Imam Reza Clinical Research Units, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran. Imam Reza Clinical Research Units, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran. Imam Reza Clinical Research Units, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran. Imam Reza Clinical Research Units, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran. Imam Reza Clinical Research Units, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.Background: The use of frozen embryo transfer (FET) is increasing worldwide in the treatment of infertility by in vitro fertilization. Different methods of endometrial preparation for FET have been suggested.Objective: The aim of this study was to compare the pregnancy outcomes after treatment with letrozole and those after treatment with the combination of gonadotropin-releasing hormone (GnRH) agonist and estradiol in FET.Materials and Methods: This randomized controlled trial study was conducted on 142 infertile women with a history of previous FET failure. Participants were randomly assigned to two groups (n = 71 each). The GnRH group received 500 µg of buserelin plus 4mg estradiol (which increased to 8 mg if endometrial thickness was less than 5 mm), and the letrozole group received 5 mg of letrozole plus 75 IU of recombinant human follicle-stimulating hormone). At least two high-quality embryos were transferred to each subject in both groups. The outcome measures were clinical pregnancy rate and fetal heart rate detection.Results: Subjects in the study groups had similar demographic characteristics and baseline clinical condition. Mean endometrial thickness in the letrozole and GnRH agonist groups were 8.90 ± 0.88 mm and 8.99 ± 0.85 mm, respectively (p = 0.57). The number of positive results of the beta human chorionic gonadotropin test and detection of fetal heartbeat were not significantly different between the groups (p > 0.05).Conclusion: The administration of letrozole and GnRH may produce similar pregnancy outcomes in FET.https://doi.org/10.18502/ijrm.v18i2.6417letrozole, fertilization in vitro, pregnancy outcome. |
| spellingShingle | Nayere Khadem Ghaebi Malihe Mahmoudiniya Mona Najaf Najafi Elnaz Zohdi Matin Attaran Comparison of letrozole with gonadotropin-releasing hormone agonist in frozen embryo transfer after recurrent implantation failure: An RCT International Journal of Reproductive BioMedicine letrozole, fertilization in vitro, pregnancy outcome. |
| title | Comparison of letrozole with gonadotropin-releasing hormone agonist in frozen embryo transfer after recurrent implantation failure: An RCT |
| title_full | Comparison of letrozole with gonadotropin-releasing hormone agonist in frozen embryo transfer after recurrent implantation failure: An RCT |
| title_fullStr | Comparison of letrozole with gonadotropin-releasing hormone agonist in frozen embryo transfer after recurrent implantation failure: An RCT |
| title_full_unstemmed | Comparison of letrozole with gonadotropin-releasing hormone agonist in frozen embryo transfer after recurrent implantation failure: An RCT |
| title_short | Comparison of letrozole with gonadotropin-releasing hormone agonist in frozen embryo transfer after recurrent implantation failure: An RCT |
| title_sort | comparison of letrozole with gonadotropin releasing hormone agonist in frozen embryo transfer after recurrent implantation failure an rct |
| topic | letrozole, fertilization in vitro, pregnancy outcome. |
| url | https://doi.org/10.18502/ijrm.v18i2.6417 |
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