ArticleCaspian journal of internal medicine2023
Effect of intramuscular injection of human chorionic gonadotropin on endometrium preparation in frozen-thawed embryo transfer cycle: A randomized clinical trial.
Article in Caspian journal of internal medicine, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
3 citing papers in PubMed, 3 citations in OpenAlex.
- The Effect of Intramuscular Human Chorionic Gonadotropin on Endometrial Preparation in Frozen-Thawed Embryo Transfer: A Randomized Clinical Trial.International journal of fertility & sterility · 2026Article
- Efficacy of Daily 50 mg Intramuscular Progesterone for Luteal Phase Support in Frozen Embryo Transfer Cycles: Analysis of Serum Levels and Pregnancy Outcomes.Journal of family & reproductive health · 2025Article
- The Effect of Adding Daily 50 mg Intramuscular Progesterone to 800 mg Progesterone Suppository on TheInternational journal of fertility & sterility · 2024Article
Corrections and comments
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Authors and funding
7 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Background: Assisted reproductive therapy (ART) has been developed remarkably in these decades; however, the rate of unsuccessful embryo implantation especially in the frozen-thawed embryo transfer (FET) cycles remains high and is reported up to 70%. The current study was designed to compare the effect of intramuscular injection of hCG on endometrium preparation and embryo implantation, in women undergoing FET compared to the control group. Methods: This clinical trial was done on 140 infertile women that underwent FET. The study sample was randomly allocated to the intervention group (two 5000 unit ampoules of hCG were injected intramuscularly before the first dose of progesterone administration) and the control group (without hCG injection). In both groups, 4 days after progesterone administration, the cleavage stage embryos were transferred. The study outcomes were biochemical pregnancy, clinical pregnancy and abortion rate. Results: The average age of intervention and control group was 32.65±6.05 and 33.11±5.36 years, respectively. The basic information between two study groups did not differ significantly. The chemical (30% vs. 17.1%, P=0.073, relative risk (RR)=0.57) and clinical (28.6% vs. 14.3%, P=0.039, RR=0.50) pregnancy rates were higher in the intervention group compared to the control group; these higher ratios were only significant in clinical pregnancy rate. Abortion rate was not significantly (P=0.620) different between the intervention and control groups (4.3% vs. 1.4%, respectively). Conclusion: This study showed that intramuscular injection of 10000 IU hCG before the endometrial secretory transformation phase in cleavage-stage embryo, improves IVF cycle outcomes.
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