Implantation sites after embryo transfer into the central area of the uterine cavity
MetadataShow full item record
A total of 63 pregnancies (47 singleton, 15 twin, 1 triplet) from intracytoplasmic sperm injection cycles were analysed. In all embryo transfers, the catheter was introduced into the endometrial cavity guided by abdominal ultrasound, with the catheter tip placed at the middle point of the endometrial cavity. Gestational sacs (GS) were located 21-24 days after transfer (gestational age = 5 weeks) by two-dimensional and three-dimensional transvaginal ultrasound. The uterine cavity was divided into three parts: upper, middle and lower. Furthermore, the upper region was subdivided into right, middle and left areas, and the middle region was subdivided into right and left areas. The frequency of gestational sacs in each area was evaluated. In singleton pregnancies 66.0% (31/47) of the GS were detected in the upper region, 29.8% (14/47) in the middle region and 4.2% (2/47) in the lower region. In multiple pregnancies (twins and triplet) 45.5% (15/33) of the GS were detected in the upper region, 51.5% (17/33) in the middle region and 3.0% (1/33) in the lower region. In conclusion, the results demonstrate that when embryos are transferred to the central area of the uterine cavity there is an increase in implantation rate in the middle region compared with the rate expected in naturally conceived pregnancies (9-15%).
How to cite this document
Showing items related by title, author, creator and subject.
Effects of heat stress on development, quality and survival of Bos indicus and Bos taurus embryos produced in vitro Silva, C. F. ; Sartorelli, E. S. ; Castilho, A. C S ; Satrapa, R. A. ; Puelker, R. Z. ; Razza, E. M. ; Ticianelli, J. S. ; Eduardo, H. P.; Loureiro, B. ; Barros, C. M. (Theriogenology, 2013) [Artigo]Heat stress is an important cause of poor development and low survival rates in bovine embryos. Experiments were conducted to test the hypothesis that Bos indicus embryos are more resistant to heat stress than are Bos ...
Valor preditivo do potencial de implantação embrionário pela análise do perfil químico de meios de cultivo por espectrometria de massas (ESI-Q-ToF) Cortezzi, Sylvia S.; Cabral, Elaine C.; Trevisan, Marcello G.; Ferreira, Christina R.; Eberlin, Marcos N.; Edson Jr., Borges (Jornal Brasileiro de Reproducao Assistida, 2011) [Artigo]Objective: This case-control study analyzed mass spectrometry fingerprinting patterns of culture media samples used for embryo culture to predict embryo implantation. Methods: The culture medium harvested after embryo ...
Petersen, Claudia Guilhermino ; Mauri, Ana Lucia ; Razera Baruffi, Ricardo Luiz; Alcântara Oliveira, João Batista; Felipe, Valeria; Massaro, Fabiana Cagnoto; Franco Junior, Jose Gonçalves (Reproductive BioMedicine Online, 2006) [Artigo]Laser-assisted hatching is little documented in the literature regarding its efficacy in cryopreserved-thawed (CT) embryo transfer cycles. The aim of the present study was to evaluate in a randomized manner the efficacy ...