BACKGROUND Meta-analysis revealed that embryo placement 20 mm from the fundal endometrial surface resulted in higher pregnancy rate, ongoing pregnancy rate, and live birth rate compared with placement 10 mm from the fundal endometrial surface. Pregnancy and implantation rates according to relative position were higher when the catheter tip was positioned close to the middle of the endometrial c...

background :subclinical hypothyroidism may adversely affect in vitro fertilization (ivf) outcomes. however the cutoff of thyroid-stimulating hormone (tsh) for diagnosis and treatment is controversal. the aim of this study was to find the association of clinical pregnancy rate with regard to tsh levels in women undergoing ivf.   methods: a historical cohort study of 816 infertile patients who un...

objective: the study aimed to determine the relationship between presence of antiphospholipid antibodies (apls) and clinical pregnancy rate in patients undergoing ivf/icsi procedures. materials and methods: this descriptive-analytic study performed on two hundred consecutive women referred for ivf/icsi in vali-e-asr reproductive health research center. serum levels of apls , anticardiolipin [ac...

clinical reproductive centers produce large amounts of surplus poor-quality embryos annually, how to maximize the use of these embryos, and which of them have the potential to develop into blastocyst stage and influencing factors were lack of systematic research. objective: to investigate the fate of surplus poor-quality embryos which were cultured to obtain blastocyst, determine the factors wh...

Abstract Study question To determine clinical pregnancy rate after laser-induced collapse of blastocyst before cryopreservation Summary answer Laser the increases regardless assigned embryo quality group compared to blastocysts vitrified without laser collapsing What is known already Vitrification has been associated with certain risks structure an due intracellular ice crystal formation and im...

background: frozen- thawed embryo transfer is an essential part of art treatment and outcomes of this procedure are associated with several clinical factors. several studies have showed an increase level of ivf outcomes in women with sufficient vitamin d. objective: whether treatment of vitamin d insufficiency can improve pregnancy rates in frozen-thawed embryo transfer cycles. materials and me...

BACKGROUND The goal of this study was to assess the association between endometrial thickness on the chorionic gonadotropin (hCG) day and in vitro fertilization and embryo transfer (IVF-ET) outcome in normal responders after GnRH antagonist administration. METHODS A retrospective cohort study was performed in normal responders with GnRH antagonist administration from January 2011-December 201...