Abstract Study question Do the oocytes retrieved after luteal phase ovarian stimulation (OS) have same survival rate as those follicular (OS)? Summary answer Oocyte vitrification is similar in a OS compared to phase. What known already Oocytes recently captured scientific interest dual gaining popularity. obtained added shorten time pregnancy per intention treat poor responders. Embryos with th...

The Southampton In Vitro Fertilisation Programme was established in 1986. Since that time the programme has maintained a clinical pregnancy rate of over 25 per oocyte retrieval. Embryos in excess of requirements for fresh transfer have been cryopreserved using controlled rate freezing and Propanediol as a cryoprotectant. Review of the first 75 frozen embryo transfers in natural or clomid induce...

Financial compensation of women donating oocytes for infertility therapy or for research is justified on ethical grounds and should acknowledge the time, inconvenience, and discomfort associated with screening, ovarian stimulation, and oocyte retrieval, and not vary according to the planned use of the oocytes, the number or quality of oocytes retrieved, the number or outcome of prior donation c...

BACKGROUND Poor ovarian response and retrieval of no oocytes following ovarian stimulation for in vitro fertilization (IVF) is a challenging problem for both the patient and the clinician. FINDINGS Recent evidence indicates that folliculogenesis occurs in a wave-like fashion indicating that there are multiple follicular recruitment waves in the same menstrual cycle. This relatively new scient...

The significance of the presence of coarse dark granules in the perivitelline space of oocytes has not been studied before. The study included 2288 intact oocytes [2063 in metaphase II (MII), 136 in metaphase I (MI), and 89 in germinal vesicle (GV)] retrieved in 206 intracytoplasmic sperm injection cycles stimulated by a long agonist protocol. The incidence of granules varied with oocyte maturi...

Embryo transfer policy and luteal supplementation was reviewed, comparing literature data and the results from the Maribor IVF Centre. A retrospective analysis of 1024 cycles in patients undergoing IVF, intracytoplasmic sperm injection (ICSI) or testicular sperm aspiration in unstimulated cycles was carried out using four different approaches for cycle monitoring. This showed that the most succ...

Recent findings In random-start protocols, the number of total and mature oocytes retrieved, oocyte maturity rate, mature oocyte yield and fertilization rates are similar to those in conventional (early follicular phase start) protocols. Starting ovarian stimulation in the late follicular or luteal phase did not show any superiority against the other. The presence of corpus luteum or luteal pha...

BACKGROUND Abnormal oocyte morphology has been associated with the hormonal environment to which the gametes are exposed. OBJECTIVE In this study, we evaluated the oocytes morphology, fertilization rate, embryos quality, and implantation rate resulted of retrieved oocytes in different times after human chorionic gonadotrophin (HCG) administration. MATERIALS AND METHODS A total of 985 metaph...

Empty follicle syndrome (EFS) is a condition in which no oocytes are obtained after an apparently successful ovarian stimulation. Genuine EFS (GEFS) is differentiated from false EFS by an optimal level of human chorionic gonadotropin on the day of oocyte retrieval. Some believe that GEFS does not exist and that it is only a reflection of the margin of error attendant upon the procedure of oocyt...

Background Infertility and diagnostic and therapeutic procedures of which during assisted reproduction technologies (ART) make discomfort and anxiety for infertile couples. Several studies have demonstrated that infertility treatment procedures, particularly during ovulation induction period, lead to high levels of distress and anxiety in infertile women. The aim of this study was to evaluate t...