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Elective oocyte cryopreservation

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https://www.readbyqxmd.com/read/28421498/chapter-14-establishing-an-oocyte-cryobank-network
#1
James Graham, Josh Lim, Michael Tucker
Improvements in oocyte cryopreservation has prompted wider acceptance of this technology leading to its use for several reasons. Notably, in addition to elective and medically driven reasons for oocyte cryostorage for fertility preservation, donor oocyte cryobanking is beginning to gain traction, potentially replacing fresh oocyte donation in assisted reproduction. Donor "egg banking," while not totally analogous to donor sperm banking, does provide strong benefits in terms of scheduling flexibility and improved clinical efficiencies, while providing a wider immediate inventory choice...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28416291/cumulative-live-birth-rate-after-gnrh-agonist-trigger-and-elective-cryopreservation-of-all-embryos-in-high-responders
#2
Veljko Vlaisavljević, Borut Kovačič, Jure Knez
Elective embryo cryopreservation after using gonadotrophin-releasing hormone (GnRH) antagonist protocols and GnRH agonist triggering is becoming an increasingly important part of medically assisted reproduction. We designed a single-centre retrospective study to assess the cumulative probability of achieving a live birth through consecutive transfers of vitrified-warmed blastocysts after elective embryo cryopreservation in high-responding patients. Hence, 123 women identified to be at high risk for developing ovarian hyperstimulation syndrome were included...
April 7, 2017: Reproductive Biomedicine Online
https://www.readbyqxmd.com/read/28398477/elective-embryo-transfers-on-day-6-reduce-implantation-compared-with-transfers-on-day-5
#3
V Poulsen, H J Ingerslev, K Kirkegaard
STUDY QUESTION: Is there a difference in pregnancy rates between embryos transferred electively on Day 5 and Day 6, respectively? SUMMARY ANSWER: The chance of pregnancy is significantly reduced (odds ratio (OR): 0.34; 95% CI 0.22-0.52) if transfer is performed on Day 6 compared with Day 5. WHAT IS KNOWN ALREADY: Several studies report that Day 5 transfers have higher implantation rates (IRs) when compared with Day 6 transfers. These studies were based on non-elective Day 6 transfers, where transfers on Day 6 were performed with developmentally delayed embryos...
April 7, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28392003/increasing-awareness-of-age-related-fertility-and-elective-fertility-preservation-among-medical-students-and-house-staff-a-pre-and-post-intervention-analysis
#4
Erica Anspach Will, Bat-Sheva Maslow, Leah Kaye, John Nulsen
OBJECTIVE: To assess medical students' and house staff's knowledge and personal and professional perceptions of age-related fertility and fertility preservation before and after an educational intervention. DESIGN: Pre-/post intervention survey. SETTING: University-based medical center. PATIENT(S): Medical students and house staff. INTERVENTION(S): An educational session on age-related fertility decline and elective fertility preservation...
April 6, 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28333033/freeze-all-cycle-in-reproductive-medicine-current-perspectives
#5
Matheus Roque, Marcello Valle, Alessandra Kostolias, Marcos Sampaio, Selmo Geber
The freeze-all strategy has emerged as an alternative to fresh embryo transfer (ET) during in vitro fertilization (IVF) cycles. Although fresh ET is the norm during assisted reproductive therapies (ART), there are many concerns about the possible adverse effects of controlled ovarian stimulation (COS) over the endometrium. The supra-physiologic hormonal levels that occur during a conventional COS are associated with modifications in the peri-implantation endometrium, which may be related to a decrease in pregnancy rates and poorer obstetric and perinatal outcomes when comparing fresh to frozen-thawed embryo transfers...
February 1, 2017: JBRA Assisted Reproduction
https://www.readbyqxmd.com/read/28299549/elective-single-blastocyst-transfer-in-advanced-maternal-age
#6
Samer Tannus, Weon-Young Son, Michael Haim Dahan
PURPOSE: The purpose of this study was to investigate reproductive outcomes following elective single blastocyst transfer (eSBT) compared with those of double blastocyst transfer (DBT) in advanced maternal age. METHODS: This was a retrospective cohort study performed at an academic fertility center. All women aged 40 and over for whom in vitro fertilization (IVF) cycles were performed and in whom embryo culture was extended to the blastocyst stage were reviewed for possible inclusion...
March 15, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/28166330/predicting-the-likelihood-of-live-birth-for-elective-oocyte-cryopreservation-a-counseling-tool-for-physicians-and-patients
#7
R H Goldman, C Racowsky, L V Farland, S Munné, L Ribustello, J H Fox
STUDY QUESTION: Can a counseling tool be developed for women desiring elective oocyte cryopreservation to predict the likelihood of live birth based on age and number of oocytes frozen? SUMMARY ANSWER: Using data from ICSI cycles of a population of women with uncompromised ovarian reserve, an evidence-based counseling tool was created to guide women and their physicians regarding the number of oocytes needed to freeze for future family-building goals. WHAT IS KNOWN ALREADY: Elective oocyte cryopreservation is increasing in popularity as more women delay family building...
April 1, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28130435/cumulative-live-birth-rates-after-one-art-cycle-including-all-subsequent-frozen-thaw-cycles-in-1050-women-secondary-outcome-of-an-rct-comparing-gnrh-antagonist-and-gnrh-agonist-protocols
#8
M Toftager, J Bogstad, K Løssl, L Prætorius, A Zedeler, T Bryndorf, L Nilas, A Pinborg
STUDY QUESTION: Are cumulative live birth rates (CLBRs) similar in GnRH-antagonist and GnRH-agonist protocols for the first ART cycle including all subsequent frozen-thaw cycles from the same oocyte retrieval? SUMMARY ANSWER: The chances of at least one live birth following utilization of all fresh and frozen embryos after the first ART cycle are similar in GnRH-antagonist and GnRH-agonist protocols. WHAT IS KNOWN ALREADY: Reproductive outcomes of ART treatment are traditionally reported as pregnancies per cycle or per embryo transfer...
March 1, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28122888/response-to-ovarian-stimulation-is-not-impacted-by-a-breast-cancer-diagnosis
#9
Molly M Quinn, Hakan Cakmak, Joseph M Letourneau, Marcelle I Cedars, Mitchell P Rosen
STUDY QUESTION: Does a breast cancer diagnosis impact ovarian function in the setting of fertility preservation? SUMMARY ANSWER: Ovarian reserve and ovarian stimulation outcomes are similar in patients with a new diagnosis of breast cancer and patients undergoing elective fertility preservation. WHAT IS KNOWN ALREADY: Prior studies, with small study populations, lack of controlling for individual differences in ovarian reserve and infertile controls, have reported conflicting outcomes for cancer patients undergoing ovarian stimulation for fertility preservation...
March 1, 2017: Human Reproduction
https://www.readbyqxmd.com/read/27986819/there-is-no-evidence-that-the-time-from-egg-retrieval-to-embryo-transfer-affects-live-birth-rates-in-a-freeze-all-strategy
#10
K Lattes, M A Checa, R Vassena, M Brassesco, V Vernaeve
STUDY QUESTION: Does the time from ovum pick-up (OPU) to frozen embryo transfer (FET) affect reproductive outcomes in a freeze-all strategy? SUMMARY ANSWER: Our study did not detect statistically significant differences between first and subsequent cycles, clinically relevant differences are not ruled out and further and larger studies are required. WHAT IS KNOWN ALREADY: Following controlled ovarian hyperstimulation (COH) delaying FET until the endometrium has returned to an optimal pre-stimulation state may have a significant emotional impact on patients, which adds to the stress and anxiety accompanying a standard IVF cycle...
February 2017: Human Reproduction
https://www.readbyqxmd.com/read/27922944/oocyte-vitrification-for-elective-fertility-preservation-the-past-present-and-future
#11
Vinay Gunnala, Glenn Schattman
PURPOSE OF REVIEW: Oocyte cryopreservation is no longer experimental and one of its rapidly growing indications is elective fertility preservation. Currently there is no sufficient evidence to support its practice and therefore its place in IVF remains uncertain. RECENT FINDINGS: Vitrification has superior post-thaw survival and fertilization outcomes compared with oocytes that were frozen with the slow-freeze technique. Oocyte vitrification produces similar IVF outcomes compared with fresh oocytes and is not associated with further obstetrical or perinatal morbidity...
February 2017: Current Opinion in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/27672732/elective-oocyte-cryopreservation-for-deferred-childbearing
#12
Kara N Goldman, Jamie A Grifo
PURPOSE OF REVIEW: Elective oocyte cryopreservation for deferred childbearing has gained popularity worldwide, commensurate with increased knowledge regarding age-related fertility decline. The purpose of this review is to summarize recent data regarding trends in delayed childbearing, review recent findings surrounding age-related fertility decline, acknowledge significant gaps in knowledge among patients and providers regarding fertility decline and review outcomes following elective oocyte cryopreservation...
December 2016: Current Opinion in Endocrinology, Diabetes, and Obesity
https://www.readbyqxmd.com/read/27649578/aspiration-of-immature-oocytes-during-cesarean-section-for-fertility-preservation
#13
Avi Ben-Haroush, Ronit Abir, Onit Sapir, Roni Garor, Benjamin Fisch
BACKGROUND: In vitro maturation of immature oocytes is an important technology for selected clinical indications. We previously described a pregnant woman with a history of renal transplantation who underwent oocyte aspiration during cesarean section (CS) for fertility preservation and future surrogacy. CASE: A 27-year-old pregnant woman was diagnosed with neck rhabdomyosarcoma at 37 weeks' gestation. CS was performed with direct aspiration of small follicles from one ovary and oophorectomy of the other...
September 21, 2016: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/27639996/re-implantation-of-cryopreserved-ovarian-cortex-resulting-in-restoration-of-ovarian-function-natural-conception-and-successful-pregnancy-after-haematopoietic-stem-cell-transplantation-for-wilms-tumour
#14
C E Dunlop, B M Brady, M McLaughlin, E E Telfer, J White, F Cowie, S Zahra, W H B Wallace, R A Anderson
With the improvement of long-term cancer survival rates, growing numbers of female survivors are suffering from treatment-related premature ovarian insufficiency (POI). Although pre-treatment embryo and oocyte storage are effective fertility preservation strategies, they are not possible for pre-pubertal girls or women who cannot delay treatment. In these cases, the only available treatment option is ovarian cortex cryopreservation and subsequent re-implantation. A 32-year-old woman had ovarian cortex cryopreserved 10 years previously before commencing high-dose chemotherapy and undergoing a haematopoietic stem cell transplant for recurrent adult Wilms tumour, which resulted in POI...
December 2016: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/27609984/the-effect-of-an-immediate-frozen-embryo-transfer-following-a-freeze-all-protocol-a-retrospective-analysis-from-two-centres
#15
Samuel Santos-Ribeiro, Nikolaos P Polyzos, Vuong Thi Ngoc Lan, Johannie Siffain, Shari Mackens, Lisbet Van Landuyt, Herman Tournaye, Christophe Blockeel
STUDY QUESTION: Does the timing of the first frozen embryo transfer (FET) after gonadotropin-releasing hormone (GnRH) agonist triggering with the elective cryopreservation of all embryos affect pregnancy outcome? SUMMARY ANSWER: FETs performed immediately after a freeze-all cycle did not vary significantly from delayed FETs in terms of pregnancy rates. WHAT IS KNOWN ALREADY: As interest in, and use of, the freeze-all strategy expands in the field of reproductive medicine, the optimal timing to perform the subsequent FET has become increasingly important...
November 2016: Human Reproduction
https://www.readbyqxmd.com/read/27584608/are-there-optimal-numbers-of-oocytes-spermatozoa-and-embryos-in-assisted-reproduction
#16
REVIEW
Tanya Milachich, Atanas Shterev
The aim of this overview is to discuss the current information about the search for the optimum yield of gametes in assisted reproduction, as one of the major pillars of IVF success. The first topic is focused on the number of male gametes and the possible impact of some genetic traits on these parameters. The number of spermatozoa did not seem to be crucial when there is no severe male factor of infertility. Genetic testing prior to using those sperm cells is very important. Different methods were applied in order to elect the "best" spermatozoa according to specific indications...
August 1, 2016: JBRA Assisted Reproduction
https://www.readbyqxmd.com/read/27473351/public-support-in-the-united-states-for-elective-oocyte-cryopreservation
#17
Erin I Lewis, Stacey A Missmer, Leslie V Farland, Elizabeth S Ginsburg
OBJECTIVE: To determine whether public support for oocyte cryopreservation (OC) exists and if support varies by demographic factors. DESIGN: Cross-sectional electronic survey. SETTING: Not applicable. PATIENT(S): A nationally representative sample based on age, sex, and race of 1,064 people in the United States recruited by the company SurveyMonkey. INTERVENTIONS(S): Completion of an online questionnaire...
October 2016: Fertility and Sterility
https://www.readbyqxmd.com/read/27416834/factors-predicting-double-embryo-implantation-following-double-embryo-transfer-in-assisted-reproductive-technology-implications-for-elective-single-embryo-transfer
#18
Caitlin Martin, Jeani Chang, Sheree Boulet, Denise J Jamieson, Dmitry Kissin
PURPOSE: The aim of this study was to identify factors associated with double embryo implantation following double embryo transfer (DET) during assisted reproductive technology (ART) procedures and to evaluate the implications of findings in selecting candidates for elective single embryo transfer (eSET). METHODS: Factors predicting double embryo implantation, defined as embryo transfers with two or more heartbeats on 6-week ultrasound following DET, were assessed using the US National ART Surveillance System data from 2000 to 2012 (n = 1,793,067 fresh, autologous transfers)...
October 2016: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/27114051/comparison-of-ovarian-stimulation-response-in-patients-with-breast-cancer-undergoing-ovarian-stimulation-with-letrozole-and-gonadotropins-to-patients-undergoing-ovarian-stimulation-with-gonadotropins-alone-for-elective-cryopreservation-of-oocytes%C3%A2
#19
COMPARATIVE STUDY
Nigel Pereira, Kolbe Hancock, Christina N Cordeiro, Jovana P Lekovich, Glenn L Schattman, Zev Rosenwaks
The primary objective of this study is to compare the oocyte yield in breast cancer patients undergoing controlled ovarian stimulation (COS) using letrozole and gonadotropins with patients undergoing COS with standard gonadotropins for elective cryopreservation of oocytes. Odds ratios (OR) for the number of mature oocytes were estimated. Pregnancy outcomes for breast cancer patients undergoing frozen-thawed 2-PN embryo transfers (FETs) after oncologic treatment were also noted. 220 and 451 cycles were identified in the breast cancer and the elective cryopreservation groups, respectively...
October 2016: Gynecological Endocrinology
https://www.readbyqxmd.com/read/27031375/why-all-women-should-freeze-their-eggs
#20
Ana Cobo, Juan Antonio García-Velasco
PURPOSE OF REVIEW: The use of oocyte cryopreservation via vitrification has increased lately, becoming a common strategy in many IVF centers. This review summarizes the current state of oocyte vitrification, by analyzing the most recent reports on its use in IVF as part of infertile treatment and its contribution to elective fertility preservation (EFP). RECENT FINDINGS: Oocyte vitrification has become helpful for managing different clinical situations currently providing similar results to fresh oocytes...
June 2016: Current Opinion in Obstetrics & Gynecology
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