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Reproductive Biomedicine
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Volume 18, Issue 2 (February 2020)
IJRM 2020, 18(2): 105-112 |
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Khadem Ghaebi N, Mahmoudiniya M, Najaf Najafi M, Zohdi E, Attaran M. Comparison of letrozole with gonadotropin-releasing hormone agonist in frozen embryo transfer after recurrent implantation failure: An RCT. IJRM 2020; 18 (2) :105-112
URL: http://ijrm.ir/article-1-1323-en.html
URL: http://ijrm.ir/article-1-1323-en.html
1- Department of Obstetrics, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
2- Imam Reza Clinical Research Units, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
3- Department of Obstetrics, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran. ,elnaz.zohdi61@gmail.com
2- Imam Reza Clinical Research Units, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
3- Department of Obstetrics, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran. ,
Abstract: (2778 Views)
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.
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.
Type of Study: Original Article |
Subject:
Fertility & Infertility
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