introduction: from maturity to menopause, women are worried about pregnancy. abstinence from sex or use of pregnancy prevention methods are choices for them. as abstinence is impossible, the only remaining choice is use of pregnancy prevention methods. effective control of pregnancy is really essential for the health of mother and infant and also control of unplanned increase in population. reg...

background: c-reactive protein (crp) can be increased after hormonal stimulations. the changes of crp might affect the success of in-vitro fertilization (ivf). objective: the aim of this study was to determine the possible relationship between the serum crp level and outcome of controlled ovarian stimulation, and pregnancy rate in patients undergoing ivf or intra cytoplasmic sperm injection (ic...

Background: Preimplantation genetic aneuploidy screening (PGS) has been performed during the last decade as a way of enhancing embryo selection in patients with an increased incidence of embryonic numerical chromosome abnormalities (advanced maternal age, recurrent miscarriage, and recurrent implantation failure). It has been proposed that the replacement of euploid embryos in these patients wo...

PURPOSE Blastocyst transfer has been recommended to raise the implantation rate without affecting the pregnancy rate. The objective of this meta-analysis is to systematically evaluate whether the live birth rate and other pregnancy outcomes can be improved by blastocyst transfer compared with cleavage-stage embryos transfer. MATERIALS AND METHODS EMBASE and MEDLINE databases were searched for...

the success rate of several advanced basic and clinical techniques in the field of mammalian biotechnology, including cloning, pre-implantation genetic diagnosis, and assisted reproductive techniques (art) depends mainly on the success rate of pregnancy following in vitro fertilization-embryo transfer (ivfet). the techniques used in art have advanced considerably since the first in vitro fertil...

background: implantation is considered as the rate-limiting step in success of assisted reproduction techniques, and intrauterine insemination cycles. it might be affected by ovarian superovulation and endometrial local scratching. objective: this study aims to investigate the effect of local endometrial injury on the outcome of iui cycles. materials and methods: in this randomized clinical tri...

the main factors affecting pregnancy and implantation rates are uterine receptivity, embryo quality, and transfer efficiency. embryo transfer (et) is the last step of critically important procedure of in vitro fertilization (ivf) and probably the least successful step in assisted reproductive technology (art) treatment cascade; though simple in most of the cases, it may pose to be the most diff...

background: embryo transfer (et) has traditionally been performed two days after oocyte retrieval. delaying transfer from day two to day three or four would allow for further development of the embryo might therefore optimize the selection of viable and best quality embryos for transfer and may be closer to the physiological time of the entry into the uterus than transfer on day two and might h...

objective : this study investigated the effect of body mass index (bmi) on the success rate of ivf for couples with different causes of infertility. materials and methods : in a cross sectional descriptive- analytic study conducted simultaneously in mehr ivf center and vali-e-asr reproductive health research center, the success rate of ivf was examined in 396 consecutive women undergoing ivf cy...

Background: Anti-mullerian hormone (AMH) could be involved in the abnormal folliculogenesis in the polycystic ovary syndrome which affects 5-10% of women of reproductive age worldwide and is the most common cause of oligoanovulation , infertility , and hyperandrogenism. Materials and Methods: A prospective study included 66 women aged 21-24 years referred for in vitro fertilization (IVF) ,26 pa...