Objective:The main objective of this study was to evaluate viability, embryo implantation rate and clinical pregnancy in patients undergoing controlled ovarian stimulation. material and methods: Viable embryos of patients deriving from in vitro -zing and thawing of embryos were evaluated during the periods from January 2010 to December 2012 in the Clinical Reproduction, Presidente Prudente -SP. Results: Total of 176 embryos was frozen. The average number of frozen/thawed embryos per patient was 5, totaling 140 thawed embryos. These thawed embryos, 78,6% (110/140) displayed viable morphologically (at least 50% from intact blastomeres) and 75% (105/140) of thawed embryos were transferred. In 28 cycles in which there was transference, an average of 3.75 embryos were transferred per patient, from which resulted in 17 biochemical pregnancies and of these 8 pregnancies reached term (28,6%) and embryonic implantation rate was 20%. Conclusion: It can be concluded that the method of survival rate, allowing the storage of surplus embryos with satisfactory pregnancy rates in thawing cycles. key words: RESUmO Objetivo: implantação e gestação com intuito de introduzir como procedimento de rotina em pacientes com hiper-estímulo ovariano. materiais e métodos provenientes de fertilização in vitro a dezembro de 2012 na Clínica Reproduction, Presidente Prudente -SP. Resultados: sentaram-se morfologicamente viáveis (pelo menos 50% descongelados foram transferidos. nos 28 ciclos em que transferidos por paciente, dos quais resultaram em 17 gesta-(28,6%) e taxa de implantação embrionária foi de 20%. Conclusão: com boas taxas de gravidez em ciclo de descongelamento. Palavras-chave Original Article JBRA Assist. Reprod. | V. 17 | nº6 | Nov-Dec / 2013 OBJECTIVE preserving embryos allowing high survival rate after thawing and implantation.
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