Study on relationship between perifollicular blood flow and in vitro fertilization-embryo transfer

摘要

Objective:To study the relationship between perifollicular blood flow and follicule development,oocyte maturing rate,fertilizing rate,cleaving rate,embryo quality and the outcomes of embryo transfer.Methods:The samples were selected from 66 suffers who underwent in vitro fertilization(IVF)or intracytoplasmic sperm injection(ICSI).Eeach patients' perifollicular blood flow(diameter ≥ 12mm)was estimated on the day of human chorionic gonadotropin(HCG)administration.Results:Among 66 cycles,26(39.4%)cycles resulted in pregnancy.perifollicular blood flow resistance index(RI),peak systolic velocity/end diastasis velocity(S/D)of non-preg-nant group was significantly higher than that of the pregnant group(P 0.05).There were no statistical difference between non-pregnant group and pregnant group in S and D(P > 0.05).There was no correlation between periFollicular blood flow RI and follicular diameter by linear regression analysis.Conclusion:Our study shows that perifollicular blood flow RI and S/D are effective indices of predicting the pregnancy outcome of IVF-ET.