Cargando…

Decreased fertility in poor responder women is not related to oocyte morphological status

INTRODUCTION: In women showing impaired fertility, a decreased response to ovarian stimulation is a major problem, limiting the number of oocytes to be used for assisted reproduction techniques (ART). Despite the several definitions of poor response, it is still a matter of debate whether young poor...

Descripción completa

Detalles Bibliográficos
Autores principales: Nichi, Marcílio, de Cassia Sávio Figueira, Rita, Paes de Almeida Ferreira Braga, Daniela, Souza Setti, Amanda, Iaconelli, Assumpto, Borges, Edson
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Termedia Publishing House 2011
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3258723/
https://www.ncbi.nlm.nih.gov/pubmed/22291773
http://dx.doi.org/10.5114/aoms.2011.22084
Descripción
Sumario:INTRODUCTION: In women showing impaired fertility, a decreased response to ovarian stimulation is a major problem, limiting the number of oocytes to be used for assisted reproduction techniques (ART). Despite the several definitions of poor response, it is still a matter of debate whether young poor responder patients also show a decrease in oocyte quality. The objective in this study was to investigate whether poor ovarian response to the superstimulation protocol is accompanied by impaired oocyte quality. MATERIAL AND METHODS: This study included 313 patients younger than 35 years old, undergoing intracytoplasmic sperm injection. Patients with four or fewer MII oocytes (poor-responder group, PR, n = 57) were age-matched with normoresponder patients (NR, n = 256). RESULTS: A higher rate of oocyte retrieval and a trend towards an increase in MII oocyte rate were observed in the NR group when compared to the PR group (71.6 ±1.1% and 74.1 ±1.0% vs. 56.3 ±2.9% and 66.5 ±3.7%; p< 0.0001 and p = 0.056, respectively). A trend toward increased implantation rates was observed in the NR group when compared to the PR group (44 and 24.5 ±2.0% vs. 28.8 and 16.4 ±3.9%; p= 0.0305 and p= 0.0651, respectively). CONCLUSIONS: Low response to ovarian stimulation is apparently not related to impaired oocyte quality. However, embryos produced from poor responder oocytes show impaired capacity to implant and to carry a pregnancy to term.