Search results for "Embryo transfer"

Blastocyst formation is similar in obese and normal weight women: a morphokinetic study

2021

Abstract STUDY QUESTION Does the embryo cleavage pattern and rate of blastocyst formation differ between normal weight and obese women undergoing IVF? SUMMARY ANSWER Embryo morphokinetic development, final blastocyst formation rate and blastocyst morphology do not differ between obese and normal weight women. WHAT IS KNOWN ALREADY Female obesity has been related to impaired IVF outcomes. Although the mechanisms responsible for this detrimental effect are thought to include impaired oocyte and embryo quality and reduced endometrial receptivity, they are yet to be confirmed. Embryo quality has been commonly assessed using static morphological criteria. Only three studies have analysed the pro…

Reply: Endometrial scratching for women with repeated implantation failure.

2014

P–409 Comparison of the incidence of ectopic pregnancies in fresh versus frozen embryo transfers in IVF/ICSI cycles: a meta-analysis of Randomized Co…

2021

Abstract Study question Is the incidence of ectopic pregnancy (EP) increased in fresh compared with frozen embryo transfer (ET)? Summary answer The fresh ET is not associated with an increase of the incidence of EP in comparison with frozen ET. What is known already EP represents the first cause of mortality in the first trimester of pregnancy. Assisted reproductive technologies (ART) are associated with an increased EP risk. The reasons of this effect are inadequately explained and may be associated with variables patients-related as tubal diseases and ART-related as the number of embryos transferred, the depth of insertion of the catheter tip during ET and the supraphysiological estradiol…

Bleeding during transfer is the only parameter of patient anatomy and embryo quality that affects reproductive outcome: a prospective study.

2009

There is very little information available regarding the relevance of the position of embryo replacement during ET and the different anatomic characteristics of the recipient in the transfer process and on the result of assisted reproduction techniques. We prospectively analyzed, using multivariate regression analysis, 375 ETs, 177 of which were from donated oocytes and 198 from patients' own oocytes, and we found no effect of the anatomic characteristics of the uterus on the chances of achieving pregnancy when data were analyzed according to patient age and embryo quality. Interestingly, there was a significant decrease in pregnancy rates when blood was present in the catheter after the pr…

Predictors of live birth in women with a history of biochemical pregnancies after assisted reproduction treatment

2020

Abstract Objectives To ascertain whether women with a history of biochemical pregnancies (BPs) in in-vitro fertilization (IVF)/intracytoplasmic sperm injection (ICSI) treatment cycles have decreased chances of live birth (LB); and (2) to build a predictive model for LB in this particular population of infertile women. Methods In order to achieve the first objective, data from 1536 women that had a LB using autologous fresh or frozen embryos, or dropped out of further IVF/ICSI treatments after completing one to three unsuccessful treatment cycles were retrospectively analyzed. A subpopulation of 90 women that experienced one or more BPs in our assisted reproduction unit were selected to buil…

Oxygen consumption is a quality marker for human oocyte competence conditioned by ovarian stimulation regimens.

2011

Objective To evaluate the effect of different ovarian stimulation protocols on oocyte respiration and to investigate the relationship between oocyte oxygen consumption and reproductive outcome. Design Prospective observational cohort study. Setting Infertility clinic in a university hospital. Patient(s) A total of 349 oocytes from 56 IVF treatment cycles in our oocyte donation program. Intervention(s) None. Main Outcome Measure(s) Average oocyte oxygen consumption rate in fmol/s. We correlated oxygen consumption values with ovarian stimulation features, fertilization, embryo quality on days 2 and 3, and implantation. Result(s) Differences in the measured oxygen consumption rates were found …

Embryologic outcome and secretome profile of implanted blastocysts obtained after coculture in human endometrial epithelial cells versus the sequenti…

2008

Objective To compare embryologic and clinical outcomes in terms of preimplantation development, implantation, pregnancy rates, and secretome profile of implanted blastocysts from the preimplantation genetic diagnosis program grown in sequential versus endometrial epithelial cell (EEC) coculture system. Design Retrospective clinical study and prospective experimental study. Setting In vitro fertilization clinical unit and university research laboratory. Intervention(s) Blastomere biopsy, embryo culture, blastocyst transfer, and protein analysis of the media conditioned from implanted embryos obtained from coculture and sequential systems. Main Outcome Measure(s) Clinical study: blastocyst, i…