Novel modified criteria for sperm morphology in oocyte insemination could reduce ICSI rates without affecting IVF outcomes.

Objective: To evaluate the IVF outcomes of conventional insemination for less severe teratozoospermia (LST) patients (sperm morphology >2% and <4% normal forms and total motile sperm count ≥10 × 10) and normal sperm patients defined by WHO criteria 2010 in the interest of reducing intracytoplasmic sperm injection (ICSI) rate in IVF.

Materials And Methods: In this retrospective study, a total of 330 patients were recruited in the conventional IVF insemination. Among them, there were 76 patients in LST group and 254 patients in the normal sperm group.

Cryotop vitrification as compared to conventional slow freezing for human embryos at the cleavage stage: survival and outcomes.

Objective: This study was conducted to compare the efficacy of cryotop vitrification of human cleavage-stage embryos to that of conventional slow freezing of these embryos with respect to survival. A second objective was to compare the two cryopreservation techniques with respect to outcomes for a cohort of women.

Materials And Methods: Cleavage-stage embryos from 102 patients were cryopreserved either by vitrification (57 patients) or by traditional slow freezing (45 patients).

Relationship of progesterone/estradiol ratio on day of hCG administration and pregnancy outcomes in high responders undergoing in vitro fertilization.

Objective: To evaluate the predictive value of a serum P/E(2) ratio measured on the day of hCG administration regarding pregnancy outcomes in high responders undergoing IVF.

Design: Retrospective study.

Setting: Teaching hospital.

An increased serum progesterone-to-estradiol ratio on the day of human chorionic gonadotropin administration does not have a negative impact on clinical pregnancy rate in women with normal ovarian reserve treated with a long gonadotropin releasing hormone agonist protocol.

Objective: To evaluate the relationship between serum P:E(2) ratio on the day of hCG administration and the clinical outcomes in infertile women with normal ovarian reserve treated with a long GnRH agonist (GnRH-a) protocol.

Design: Retrospective analysis of IVF-embryo transfer data.

Setting: University teaching hospital.