Korean J Fertil Steril Search


Korean Journal of Fertility and Sterility 2004;31(4):225-234.
Published online December 1, 2004.
Clinical Efficacy and Hormonal Change of GnRH Antagonist in Controlled Ovarian Stimulation for IVF-ET.
Shin Yong Moon, Eun Kyung Chun, Sang Don Kim, Young Sik Choi, Byung Chul Jee, Seung Yup Ku, Chang Suk Suh, Young Min Choi, Jung Gu Kim, Seok Hyun Kim
1Department of Obstetrics and Gynecology, College of Medicine, Seoul National University, Seoul, Korea.
2Institute of Reproductive Medicine and Population, Medical Research Center, Seoul National University, Seoul, Korea.
OBJECTIVES: To evaluate the efficacy of GnRH antagonist cetrorelix in women undergoing controlled ovarian hyperstimulation (COH) for in vitro fertilization (IVF) and intracytoplasmic sperm injection (ICSI) and to determine changes in serum hormone concentrations during cetrorelix administration. METHODS: We performed a clinical trial on 30 patients undergoing COH with highly purified follicular stimulating hormone (HP-FSH) and gonadotropin releasing hormone antagonist (GnRHant), cetrorelix. FSH was administrated from day 2 or 3 of cycle with fixed dose and adjusted according to individual response. 0.25 mg of cetrorelix was injected daily subcutaneously from stimulation day 5 until the day of hCG administration. Daily ultrasound monitoring was performed for growing follicles and serum levels of luteinizing hormone (LH), estradiol (E2) and progesterone were measured daily during cetrorelix administration. Up to 4 embryos were transferred. RESULTS: Mean age of enrolled patients was 32.0+/-3.4 years (mean +/-S.D.). All of 30 patients underwent oocyte pick-up, and embryo transfer was done in 28 patients. The total and mean numbers of received oocytes were 196 and 6.5+/-4.7, the number of fertilized eggs was 111, and the fertilization rate was 56.6%. Total duration of FSH administration was 9.2+/-2.2 days and mean of 24.3+/-7.7 ampules of HP-FSH was administered. Total duration of cetrorelix administration was 5.7+/-1.9 days. Serum LH and progesterone levels were maintained in the range of 1.4~2.9 mIU/mL and 0.3~0.6 ng/ mL, which respectively reflected effective prevention of premature LH surge. Clinical pregnancies were achieved in 9 patients, and overall clinical pregnancy rate was 30.0% per oocyte retrieval, and 32.1% per embryo transfer. CONCLUSION: GnRH antagonist is safe and convenient for COH for IVF-ET and effective with optimal pregnancy rate.
Key Words: GnRH antagonist; Controlled ovarian hyperstimulation (COH); In vitro fertilization and embryo transfer (IVF-ET)


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