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A simplified method of timing frozen embryo transfers
American Journal of Obstetrics and Gynecology, 1995Our purpose was to compare a simple artificial hormone replacement regimen with two other protocols incorporating pituitary down-regulation with gonadotropin-releasing hormone agonist for frozen embryo transfers.We performed a retrospective analysis of pregnancy outcomes after 366 frozen embryo transfers timed by one of three hormone replacement ...
B, Yee +5 more
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Cycle regimens for frozen-thawed embryo transfer
2002Pregnancy rates following frozen-thawed embryo transfer (FET) treatment have always been found to be lower than following embryo transfer using fresh embryos. Nevertheless, FET increases the (cumulative) pregnancy rate, reduces cost, is relatively simple to undertake and can be accomplished in a shorter time period compared to repeated 'fresh' cycles ...
T, Ghobara, P, Vandekerckhove
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Frozen Embryo Transfer Preparation
2019The increased use of embryo freezing has placed greater emphasis on techniques and protocols regarding frozen-thawed embryo transfer (FET). While no one method has emerged as the superior choice, the various strategies in use each have their own benefits as well as drawbacks.
David Prokai, Orhan Bukulmez
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Cervical transfer of deep frozen cattle embryos
Theriogenology, 1981Cattle blastocysts were collected from 29 donors 7-8 days after estrus and frozen and stored in liquid nitrogen up to several months. Two procedures were used for freezing and thawing: -- procedure A: slow cooling to -60 degrees C (0.3 degrees C/min to -60 degrees C) and slow thawing (12 degrees C/min); -- procedure B: slow cooling to -30 degrees C (0 ...
J P, Renard, J P, Ozil, Y, Heyman
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Progesterone supplementation in the frozen embryo transfer cycle
Current Opinion in Obstetrics & Gynecology, 2015Currently, different modalities with regard to endometrial preparation for frozen-thawed embryo transfer (FTET) are used, the natural and artificial cycles being the most common approaches. This review is aimed to update the current knowledge about progesterone supplementation in both types of protocols.Natural cycle-frozen-thawed embryo transfer (NC ...
Israel, Ortega +1 more
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Hormone Replacement Versus Natural Frozen Embryo Transfer for Euploid Embryos
Archives of Gynecology and Obstetrics, 2019The goal of this study is to investigate hormone replacement (HR) versus natural frozen embryo transfer outcomes for euploid embryos.This is a retrospective cohort study at an academic medical center of patients undergoing in vitro fertilization with 24-chromosome day 5/6 preimplantation genetic testing for aneuploidies (PGT-A), from 2014 to 2018 using
Ange Wang, Lynn Westphal
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Frozen Zygote Intrafallopian Transfer
Obstetrical & Gynecological Survey, 1994To assess whether frozen ET to the fallopian tube is a possible alternative for cryopreserved embryos.Fifty-four patients (mean age 35 years) participated, in which their embryos were cryopreserved in 1.5 M propanediol at the pronuclear or two-cell stage. Each patient then underwent a steroid replacement cycle consisting of oral micronized 17 beta-E2 2
J L, Frederick +4 more
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Pregnancies after transfer of ultrarapidly frozen human embryos
Journal of Assisted Reproduction and Genetics, 1996We report our experience of freezing human embryos using an ultrarapid freezing method.The patients were superovulated. Oocytes were inseminated and cultured in HTF + 10% serum. A maximum of three embryos was transferred and the rest of the embryos were frozen ultrarapidly after a 3-min equilibration period in PB1 + 3.5 M DMSO + 0.25 M sucrose. Embryos
A C, Lai +5 more
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Update on direct transfer of frozen embryos
The Bovine Practitioner, 1996The Bovine Practitioner, No. 30 (1996 May)
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