TREATMENT POLICY AFTER POOR FERTILIZATION IN THE FIRST IVF CYCLE

Purpose: The chance of recurrence of poor fertilization in a second in vitro fertilization (NF) cycle was assessed, Methods: Total fertiliza tion failure was defined, and the relationship between the fertilizati on rate and the number of motile sperm cells per milliliter of semen w as assessed, Patients with a total fertilization failure or poor ferti lization (20% or less of the oocytes fertilized) were divided into thr ee subgroups with different chances of fertilization and were followed in a subsequent IVF cycle. Results: The recurrence rate of total fert ilization failure was high in all three groups (45-70%), and poor fert ilization frequently occurred in the second cycle (50-75%). Conclusion s: Poor fertilization frequently recurs in the second NF cycle. The us e of intracytoplasmic sperm injection could be considered after fertil ization of 20% or less of oocytes in the first cycle, irrespective of the number of motile sperm cells per milliliter of semen.