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...

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: In vitro fertilization (IVF) is a four-stage procedure, ovarian stimulation and monitoring, oocyte retrieval, embryo transfer. Transvaginal ultrasound–guided follicle aspiration the most common method for retrieval in assisted reproductive technologies, it increasingly performed as an outside procedure. Objective: To compare between general Anesthesia Conscious Sedation according to...

Background During a normal menstrual cycle, progesterone prepares the endometrium for pregnancy by stimulating proliferation in response to human chorionic Gnadotropin produced by the corpus luteum. Many questions were raised about the role of follicular fluid aspiration on the granuloma cells at the time of oocyte retrieving during the ART cycles. Authors believes that oocyte retrieval might d...

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...

Purpose: To assess if consecutive oocyte retrieval (OR) of more than three times for poor ovarian responders could be an effective method to obtain competent embryos becoming babies.

Oocyte retrieval guided by transvaginal ultrasound is a fundamental step in the vitro fertilization (IVF), thas performed on an outpatient basis. has been associated with pain, discomfort, and anxiety [1,2].

Background: The cryopreservation of human oocyte would make significant contribution to fertility treatments. It could also provide on alternative to embryo preservation for avoidance ethical problems. Embryo cryopreservation is now a successful procedure, but oocyte cryopreservation has poorer results. Materials and Methods: For retrieval of oocyte NMRI mouse were used. after administration of...