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Treatment policy after poor fertilization in the first IVF cycle
J Roest1, A M Van Heusden, G H Zeilmaker
1Department of Obstetrics and Gynaecology, Zuiderziekenhuis, Rotterdam, The Netherlands.
Journal of Assisted Reproduction and Genetics
|March 11, 1998
Summary
Poor fertilization often recurs in subsequent in vitro fertilization (IVF) cycles. Consider intracytoplasmic sperm injection if fewer than 20% of oocytes fertilize in the first IVF attempt.
Area of Science:
- Reproductive Medicine
- In Vitro Fertilization (IVF)
Background:
- Fertilization failure is a significant concern in assisted reproductive technologies.
- Understanding recurrence patterns of poor fertilization is crucial for patient counseling and treatment planning.
Purpose of the Study:
- To assess the recurrence rate of poor fertilization in a second in vitro fertilization (IVF) cycle.
- To evaluate the relationship between initial fertilization rates and subsequent cycle outcomes.
Main Methods:
- Defined total fertilization failure and analyzed fertilization rates against motile sperm count.
- Categorized patients with total or poor fertilization (<20% oocytes fertilized) into subgroups.
- Monitored outcomes in a subsequent IVF cycle for these patient subgroups.
Main Results:
- High recurrence rates of total fertilization failure (45-70%) were observed across all groups.
- Poor fertilization recurred in 50-75% of patients in the second IVF cycle.
Conclusions:
- Poor fertilization is a frequently recurring issue in repeat IVF cycles.
- Intracytoplasmic sperm injection (ICSI) is recommended after initial fertilization failure (<20% oocytes) regardless of sperm parameters.