[A preliminary study on in vitro fertilization and embryo transfer]

Area of Science:

• Reproductive Medicine
• In Vitro Fertilization
• Endocrinology

Context:

• This study evaluated ovulation induction protocols and oocyte retrieval methods in an in vitro fertilization and embryo transfer (IVF/ET) program.
• The study was conducted between July 1986 and February 1988 at the First Affiliated Hospital, Human Medical University.
• Forty-two women with infertility participated in the program.

Purpose:

• To assess the efficacy of different ovulation induction regimens (CC/hMG/hCG and hMG/hCG) in IVF/ET.
• To compare oocyte retrieval outcomes between laparoscopy and laparotomy.
• To identify factors influencing IVF/ET success rates.

Summary:

• Ovulation induction utilized daily follicular ultrasonography and serum estradiol monitoring, with human chorionic gonadotropin (hCG) administered at specific follicle size and estradiol levels.
• The CC/hMG/hCG regimen resulted in an average of 6.1 follicles aspirated and 3.5 oocytes recovered per case, with a 57.0% recovery rate and 60.1% fertilization rate.
• Laparotomy for oocyte retrieval yielded more oocytes than laparoscopy, and CO2 purity was suggested as a potential factor affecting IVF results. One clinical pregnancy was achieved.

Impact:

• This research provides insights into optimizing ovulation induction and oocyte retrieval techniques for improved IVF/ET outcomes.
• The findings highlight the importance of surgical approach and gas purity in oocyte retrieval for successful fertilization and pregnancy.
• The study contributes to the understanding of factors influencing the success rates in assisted reproductive technologies.