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Fresh embryo transfer

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https://www.readbyqxmd.com/read/28428945/a-successful-pregnancy-using-completely-immotile-but-viable-frozen-thawed-spermatozoa-selected-by-laser
#1
Huanhua Chen, Guixue Feng, Bo Zhang, Hong Zhou, Jinhui Shu, Xianyou Gan
The aim of this study was to report a successful pregnancy using completely immotile frozen-thawed spermatozoa selected by laser. A single laser shot was used to detect the presence of viable immotile spermatozoa in fresh and frozen-thawed testicular spermatozoa. The viability rate was 55.8% after the laser detection, and cryopreservation was carried out immediately. The thawing test was performed on the day of oocyte pick-up, and no motile sperm were observed after extending the culture for another 4 hours, while a survival rate of 39...
March 2017: Clinical and Experimental Reproductive Medicine
https://www.readbyqxmd.com/read/28428944/the-status-of-assisted-reproductive-technology-in-korea-in-2012
#2
Gyoung Hoon Lee, Hyun Jin Song, Young Min Choi, Hyuck Dong Han
OBJECTIVE: This study was designed to report the status of assisted reproductive technology (ART) therapy in South Korea between January 1, 2012 and December 31, 2012. METHODS: A localized online survey, originally developed by the International Committee Monitoring Assisted Reproductive Technologies, was first launched and provided to all available ART centers via email in 2015. Fresh embryo transfer (FET) cases were categorized as standard in vitro fertilization, intracytoplasmic sperm injection (ICSI), or half-ICSI...
March 2017: Clinical and Experimental Reproductive Medicine
https://www.readbyqxmd.com/read/28427857/vitrified-warmed-single-embryo-transfers-may-be-associated-with-increased-maternal-complications-compared-with-fresh-single-embryo-transfers
#3
Tal Shavit, Galia Oron, Son Weon-Young, Hananel Holzer, Togas Tulandi
Cryopreservation of embryos allows single-embryo transfer and storage of supernumerary embryos, maximizing cumulative pregnancy rates. The purpose of this retrospective cohort study was to compare pregnancy outcome in singletons born after fresh or vitrified-warmed single blastocyst transfer (SBT). Singleton live births resulting from SBT of fresh or vitrified-warmed embryos were compared. Primary outcomes were perinatal outcomes including small for gestational age (SGA), low birthweight, preterm deliveries (PTD), large for gestational age (LGA) and congenital malformations...
April 6, 2017: Reproductive Biomedicine Online
https://www.readbyqxmd.com/read/28421495/chapter-11-human-embryo-vitrification
#4
Juergen Liebermann
Cryopreservation is one of the keystones in clinical infertility treatment. In particular vitrification has become a well-established and widely used routine procedure that has allowed important expansion of therapeutic strategies when IVF is used to treat infertility. Vitrification of human blastocysts allows us to maximize the potential for conception from any single in vitro fertilization cycle and prevents wastage of embryos. The technology may even be used to eliminate fresh embryo transfers for reasons of convenience, uterine receptivity, fertility preservation, preimplantation genetic diagnosis, or emergency management...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28420503/age-is-a-major-prognosticator-in-extremely-low-oocyte-retrieval-cycles
#5
Yu-Ting Su, Pin-Yao Lin, Fu-Jen Huang, Fu-Tsai Kung, Yu-Ju Lin, Yi-Ru Tsai, Kuo-Chung Lan
OBJECTIVE: Clinical prognosis appears to be varied in females with poor ovarian response (POR), and poor responders defined by the Bologna criteria might not be sufficiently homogeneous. The aim of this study was to determine the major predictor of reproductive outcomes in extremely low oocyte retrieval cycles. MATERIALS AND METHODS: A cohort of fresh in vitro fertilization/intracytoplasmic sperm injection cycles (n = 858) was analyzed from January 2001 to September 2014...
April 2017: Taiwanese Journal of Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28419910/endometriosis-doubles-odds-for-miscarriage-in-patients-undergoing-ivf-or-icsi
#6
Corinna Pallacks, Jens Hirchenhain, Jan-Steffen Krüssel, Tanja N Fehm, Daniel Fehr
OBJECTIVE: To identify and estimate the importance of risk factors on pregnancy loss until the end of the second trimester after clinical pregnancy was achieved by either in vitro fertilisation (IVF) or intra-cytoplasmic sperm injection (ICSI). STUDY DESIGN: Retrospective cohort study including 588 cycles with fresh embryo transfers and 150 cycles with frozen-thawed embryo transfers using logistic regression. RESULTS: The rate of miscarriages subsequent to a fresh embryo transfer was significantly increased by a diagnosis of endometriosis (p=0...
April 5, 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/28419502/nuchal-translucency-measurement-free-%C3%AE-hcg-and-papp-a-concentrations-in-ivf-icsi-pregnancies-systematic-review-and-meta-analysis
#7
REVIEW
Paolo Cavoretto, Veronica Giorgione, Sonia Cipriani, Paola Viganò, Massimo Candiani, Annalisa Inversetti, Elena Ricci, Fabio Parazzini
So far data on the effect of assisted reproductive technologies (ART) on the components of first trimester combined screening for Down syndrome are still controversial. A systematic search of the literature was performed in order to identify the effect of ART, particularly IVF and ICSI with fresh embryo transfer, on the nuchal translucency (NT), free β-hCG and PAPP-A measurements. Moreover, a meta-analysis and a descriptive graphical representation of the ratios between ART and spontaneous pregnancies (controls) values of median of the multiple of median (m0MOM) was performed...
April 17, 2017: Prenatal Diagnosis
https://www.readbyqxmd.com/read/28417348/elevated-progesterone-and-its-impact-on-birth-weight-after-fresh-embryo-transfers
#8
Yetunde Ibrahim, Miriam J Haviland, Michele R Hacker, Alan S Penzias, Kim L Thornton, Denny Sakkas
PURPOSE: The purpose of the study was to examine the association between serum progesterone levels on the day of hCG administration and birth weight among singleton live births after fresh embryo transfer. METHODS: This study was conducted as a retrospective cohort database analysis on patients who underwent IVF treatment cycles from January 2004 to April 2012. The study was performed at a University affiliated private infertility practice. All cycles that had achieved a singleton live birth after fresh embryo transfer and for which progesterone was measured on the day of hCG administration were examined...
April 17, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/28369394/developments-in-ivf-warrant-the-adoption-of-new-performance-indicators-for-art-clinics-but-do-not-justify-the-abandonment-of-patient-centred-measures
#9
J Wilkinson, S A Roberts, A Vail
Recent advances in embryo freezing technology together with growing concerns over multiple births have shifted the paradigm of appropriate IVF. This has led to the adoption of new performance indicators for ART clinics by national reporting schemes, such as those curated by the Society for Assisted Reproductive Technology (SART) and the Human Fertilization and Embryology Authority (HFEA). Using these organizations as case studies, we review several outcome measures from a statistical perspective. We describe several denominators that are used to calculate live birth rates...
March 24, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28350875/effects-of-embryo-derived-exosomes-on-the-development-of-bovine-cloned-embryos
#10
Pengxiang Qu, Suzhu Qing, Ruiqi Liu, Hongyu Qin, Weiwei Wang, Fang Qiao, Hui Ge, Jun Liu, Yong Zhang, Wei Cui, Yongsheng Wang
The developmental competence of in vitro cultured (IVC) embryos is markedly lower than that of their in vivo counterparts, suggesting the need for optimization of IVC protocols. Embryo culture medium is routinely replaced three days after initial culture in bovine, however, whether this protocol is superior to continuous nonrenewal culture method under current conditions remains unclear. Using bovine somatic cell nuclear transfer (SCNT) embryos as the model, our results showed that compared with routine renewal treatment, nonrenewal culture system significantly improved blastocyst formation, blastocyst quality (increased total cell number, decreased stress and apoptosis, enhanced Oct-4 expression and ratio of ICM/TE), as well as following development to term...
2017: PloS One
https://www.readbyqxmd.com/read/28349510/fresh-versus-frozen-embryo-transfers-in-assisted-reproduction
#11
REVIEW
Kai Mee Wong, Madelon van Wely, Femke Mol, Sjoerd Repping, Sebastiaan Mastenbroek
BACKGROUND: In general, in vitro fertilisation (IVF) or intracytoplasmic sperm injection (ICSI) implies a single fresh and one or more frozen-thawed embryo transfers. Alternatively, the 'freeze-all' strategy implies transfer of frozen-thawed embryos only, with no fresh embryo transfers. In practice, both strategies can vary technically including differences in freezing techniques and timing of transfer of cryopreservation, that is vitrification versus slow freezing, freezing of two pro-nucleate (2pn) versus cleavage-stage embryos versus blastocysts, and transfer of cleavage-stage embryos versus blastocysts...
March 28, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28347493/transvaginal-ultrasound-to-guide-embryo-transfer-a-randomized-controlled-trial
#12
Gilad Karavani, Assaf Ben-Meir, Yoel Shufaro, Jordana H Hyman, Ariel Revel
OBJECTIVE: To compare sonographic visualization and patient pain in conventional transabdominal ultrasound (TAUS) with transvaginal ultrasound (TVUS) sonographic-guided embryo transfer (ET). DESIGN: Prospective, randomized, controlled study. SETTING: Tertiary medical center, in vitro fertilization (IVF) unit. PATIENT(S): One hundred and twenty patients younger than 40 years old scheduled for ET. INTERVENTION(S): Patients (32...
March 24, 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28347191/transferring-two-grades-i-cleavage-stage-embryo-might-not-be-a-good-protocol
#13
Mingzhao Li, Hui Wang, Chun Ma, Juanzi Shi
PURPOSE: The aim of this study was to explore whether transferring two grades I cleavage-stage embryo was suitable for the patients in the first fresh transfer. METHODS: This study included 202 single grades I cleavage-stage, 229 single grades III cleavage-stage, 743 single excellent blastocyst, 522 double grades I cleavage-stage, and 596 double grades III cleavage-stage embryo transfers. Main clinical outcomes: clinical pregnancy and twin-pregnancy rate. RESULTS: Among single excellent blastocyst, single grades I and single grades III group, the clinical pregnancy rate was significantly higher in single excellent blastocyst group than single grades I and grades III group (67...
March 28, 2017: Gynecological Endocrinology
https://www.readbyqxmd.com/read/28333696/a-universal-freeze-all-strategy-why-it-is-not-warranted
#14
Baris Ata, Emre Seli
PURPOSE OF REVIEW: There's some preclinical evidence of an adverse effect of multifollicular growth on endometrial function in assisted reproductive technology cycles. Universal elective frozen embryo transfer (eFET) in an unstimulated cycle is being promoted as a panacea, regardless of patient, and cycle characteristics. We review the clinical evidence on the effectiveness and safety of eFETs. RECENT FINDINGS: Randomized controlled trials (RCTs) comparing fresh and eFET yield contradictory results in terms of live birth rates...
March 22, 2017: Current Opinion in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28333033/freeze-all-cycle-in-reproductive-medicine-current-perspectives
#15
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/28333028/embryo-stage-of-development-is-not-decisive-for-reproductive-outcomes-in-frozen-thawed-embryo-transfer-cycles
#16
Bruno R de Carvalho, Marina W Paes Barbosa, Helena Bonesi, David B Gomes, Íris O Cabral, Antônio C Paes Barbosa, Adelino A Silva, José R Iglesias, Hitomi M Nakagawa
OBJECTIVE: To evaluate if the outcomes of IVF/ICSI in frozen-thawed embryo transfer and fresh embryo transfer cycles differ in relation to cleavage and blastocyst stages. METHODS: Retrospective cohort study to compare IVF/ICSI outcomes between fresh embryo transfer and frozen-thawed embryo transfer cycles, according to the stage of embryo development. Analysis was carried out on 443 consecutive embryo transfer cycles performed between January 1st and December 31st, 2014...
February 1, 2017: JBRA Assisted Reproduction
https://www.readbyqxmd.com/read/28333025/high-progesterone-levels-in-the-beginning-of-icsi-antagonist-cycles-and-clinical-pregnancy-still-a-concern
#17
Tatiana R Panaino, Joyce B da Silva, Maria Augusta T de Lima, Paloma Lira, Patricia C Arêas, Ana Cristina A Mancebo, Marcelo M de Souza, Roberto A Antunes, Maria do Carmo B de Souza
OBJECTIVE: In controlled ovarian hyperstimulation (COH) using antagonist cycles, an incomplete luteolysis could happen after an inefficient previous luteolysis. Since antagonist cycles are frequent today, this study aims to access the impact of serum progesterone in the beginning and at the end of stimulation, and pregnancy outcomes. METHODS: single-center cohort study, 461 fresh embryo transfers in ICSI antagonist cycles. Serum progesterone levels was measured in the beginning of COH (P4i) and on hCG day (P4f) using threshold values of 1...
February 1, 2017: JBRA Assisted Reproduction
https://www.readbyqxmd.com/read/28333024/optimizing-the-number-of-embryos-to-transfer-on-day-5-two-should-be-the-limit
#18
Claudio Ruhlmann, Lucas Molina, Graciano Tessari, Felicitas Ruhlmann, Lautaro Tessari, Diego Gnocchi, Antonio Cattaneo, Marcela Irigoyen, Alejandro Gustavo Martínez
OBJECTIVE: To define the appropriate number of embryos to be transferred at day 5. METHODS: Retrospective analysis of 784 consecutive fresh day-5 embryo transfers performed between 2007 and 2015, divided in three groups: Group A (N = 219): received the only 2 embryos that reached a transferable stage; Group B (N = 357): received 2 selected embryos among several that reached a transferable stage; Group C (N = 208): received the only 3 developing embryos. Clinical pregnancy, implantation, multiple pregnancy and delivery rates were registered...
February 1, 2017: JBRA Assisted Reproduction
https://www.readbyqxmd.com/read/28329721/how-many-embryos-should-be-transferred-a-validated-score-to-predict-ongoing-implantation-rate
#19
Nicolas Gatimel, Melissa Ladj, Carole Teston, Florence Lesourd, Carole Fajau, Clémentine Cohade, Jean Parinaud, Roger D Léandri
OBJECTIVE: To developed a prognostic score to predict ongoing implantation rate according to clinical and biological parameters and to choose the number of embryos to be transferred in patients undergoing IVF/ICSI. STUDY DESIGN: The transfer score was established using multivariate analysis of biological and clinical parameters in 3211 fresh embryo transfers in a retrospective study. Then we validated the score in 694 fresh embryo transfers in a prospective study...
March 8, 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/28319018/the-effect-of-elevated-progesterone-levels-before-hcg-triggering-in-modified-natural-cycle-frozen-thawed-embryo-transfer-cycles
#20
Eva R Groenewoud, Nick S Macklon, Ben J Cohlen
Recent studies suggest that elevated late follicular phase progesterone concentrations after ovarian stimulation for IVF may result in embryo-endometrial asynchrony, reducing the chance of successful implantation after fresh embryo transfer. It remains unclear to what extent elevated late follicular phase progesterone levels may occur in unstimulated cycles before frozen-thawed embryo transfer, or what affect they may have on outcomes. In this cohort study, 271 patients randomized to the modified natural cycle arm of a randomized controlled trial comparing two endometrial preparation regimens underwent late follicular phase progesterone and LH testing...
February 28, 2017: Reproductive Biomedicine Online
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