Financial compensation of women donating oocytes for reproductive or research purposes is justified on ethical grounds and should acknowledge the time, inconvenience, discomfort associated with screening, ovarian stimulation, oocyte retrieval, postretrieval recovery not vary according to planned use number quality retrieved. This document replaces same name published in 2016.

Case A 28 year old unmarried woman underwent a unilateral salpingo-oophorectomy and was suspected of having a malignant tumor in the remaining ovary. After consultation with the patient and her family, it was decided to cryopreserve the unfertilized oocytes. In order to reduce the risk of puncturing or rupturing the tumor when performing the oocyte retrieval from the ovary that was affected by ...

Aim To investigate which risk factors contribute to a lower oocyte retrieval ratio in women who are receiving controlled ovarian hyperstimulation. Methods The authors retrospectively analyzed 329 in vitro fertilization (IVF) cycles under controlled ovarian hyperstimulation by using a gonadotropin-releasing hormone antagonist or agonist at Osaka Medical College, Japan. The patients were classi...

BACKGROUND We studied the benefit of using in vitro matured metaphase I (MI) oocytes for ICSI in patients with a maximum of 6 mature metaphase II (MII) oocytes at retrieval. METHODS In 2004, 187 ICSI cycles were selected in which maximum 6 MII oocytes and at least one MI oocyte were retrieved. MI oocytes were put in culture to mature until the moment of ICSI, which was performed between 2 to ...

INTRODUCTION Despite the fact that ovarian stimulation is controlled, it is not always predictable. Because the day of human chorionic gonadotrophin (hCG) injection depends mainly on the patient's ovarian response to gonadotrophins, the day of oocyte retrieval cannot be determined in advance. As a result, oocyte retrievals are often scheduled to occur on weekends, a fact that entails at least o...

BACKGROUND Ovarian stimulation in IVF cycle results in luteal supraphysiological steroid concentrations especially for high response patients. The aim of this study was to evaluate the efficacy of ovarian steroid hormone suppression in luteal phase after oocyte retrieval for preventing severe ovarian hyperstimulation syndrome (OHSS) in high-risk patients with embryo cryopreservation. METHODS ...

Uterine contractility decreases at the time of blastocyst transfer Dear Sir, Fanchin and co-workers (Fanchin et al., 2001) should be congratulated for publishing a very well written paper on the role of uterine contractions in assisted reproduction. They provide convincing evidence that uterine contractility at the time of theoretical blastocyst transfer (7 days after HCG injections or 5 days a...

The frequency of iatrogenic spondylodiscitis is clearly increasing, which may reflect the increasing number of aggressive interventional procedures which may cause it. One of these is oocyte retrieval for in vitro fertilisation. The authors describe a case of Streptococcus faecalis L5-S1 spondylodiscitis. Conservative treatment is the rule, but surgery may be indicated in specific cases such as...

The aim of this study was to examine the role of serum and follicular fluid pro-inflammatory cytokines and vascular endothelial growth factor (VEGF) in the prediction of ovarian hyperstimulation syndrome (OHSS). A total of 156 consecutive women undergoing in-vitro fertilization were recruited. The study group comprised 12 women who subsequently developed moderate (n = 7) or severe (n = 5) OHSS....