{"id":6433,"date":"2015-01-16T11:00:39","date_gmt":"2015-01-16T10:00:39","guid":{"rendered":"https:\/\/www.imferblog.com\/?p=6433"},"modified":"2026-05-10T21:52:28","modified_gmt":"2026-05-10T19:52:28","slug":"que-es-la-tecnica-eeva-early-embryo-viability-assessment","status":"publish","type":"post","link":"https:\/\/www.imferblog.com\/?p=6433","title":{"rendered":"Selecci\u00f3n de embriones en FIV: avances y t\u00e9cnicas | IMFER Blog"},"content":{"rendered":"<p>Uno de los factores que m\u00e1s influye en el \u00e9xito de un ciclo de fecundaci\u00f3n in vitro es la selecci\u00f3n del embri\u00f3n que se va a transferir al \u00fatero. Un embri\u00f3n de buena calidad tiene m\u00e1s probabilidades de implantarse y de llegar a buen t\u00e9rmino. Durante d\u00e9cadas, esa selecci\u00f3n se bas\u00f3 exclusivamente en la observaci\u00f3n morfol\u00f3gica: el embri\u00f3logo evaluaba la forma, el n\u00famero de c\u00e9lulas y la presencia de fragmentaci\u00f3n de cada embri\u00f3n para elegir el mejor. Esta valoraci\u00f3n, aunque sigue siendo \u00fatil, tiene limitaciones inherentes.<\/p>\n<h2>El salto de la morfolog\u00eda a la tecnolog\u00eda<\/h2>\n<p>Las \u00faltimas generaciones de incubadoras de time-lapse han permitido un cambio importante en la forma de evaluar los embriones. Estos sistemas registran de forma continua la evoluci\u00f3n de cada embri\u00f3n mediante c\u00e1maras integradas en la incubadora, generando miles de im\u00e1genes a lo largo del cultivo sin necesidad de sacar al embri\u00f3n de su ambiente controlado.<\/p>\n<p>El an\u00e1lisis de esas im\u00e1genes, asistido por algoritmos de inteligencia artificial, permite identificar patrones de desarrollo que se correlacionan con la viabilidad embrionaria y que no son visibles en una sola fotograf\u00eda tomada en un momento concreto. El momento exacto en que el embri\u00f3n pasa de una etapa a otra, el ritmo de sus divisiones celulares y ciertas caracter\u00edsticas de su comportamiento temprano son variables que se est\u00e1n incorporando progresivamente a los criterios de selecci\u00f3n.<\/p>\n<h2>La t\u00e9cnica Eeva y su prop\u00f3sito<\/h2>\n<p>El sistema Eeva (Early Embryo Viability Assessment) fue uno de los primeros en proponer una evaluaci\u00f3n objetiva y no invasiva de los embriones en las primeras 48 horas de cultivo. El principio es el mismo que el del time-lapse: monitorizaci\u00f3n continua sin interrumpir el cultivo. Su diferencia principal fue la propuesta de un algoritmo espec\u00edfico para predecir qu\u00e9 embriones tienen mayor probabilidad de llegar al estadio de blastocisto.<\/p>\n<p>Como se\u00f1al\u00f3 el doctor Buenaventura Coroleu en la presentaci\u00f3n de este tipo de tecnolog\u00edas, uno de los beneficios esperados de una mejor selecci\u00f3n embrionaria es la reducci\u00f3n de los embarazos m\u00faltiples. Si podemos identificar con mayor precisi\u00f3n el embri\u00f3n con m\u00e1s probabilidades de implantarse, es posible transferir un solo embri\u00f3n con confianza, eliminando el riesgo de gemelaridad que implica la transferencia de dos.<\/p>\n<h2>El diagn\u00f3stico gen\u00e9tico preimplantacional como complemento<\/h2>\n<p>La evaluaci\u00f3n morfol\u00f3gica y el time-lapse analizan la forma y el comportamiento del embri\u00f3n, pero no su contenido cromos\u00f3mico. El diagn\u00f3stico gen\u00e9tico preimplantacional para aneuploid\u00edas (DGP-A) a\u00f1ade esa dimensi\u00f3n: analiza el n\u00famero de cromosomas de cada embri\u00f3n para seleccionar \u00fanicamente los que tienen la dotaci\u00f3n cromos\u00f3mica correcta.<\/p>\n<p>Esta combinaci\u00f3n, morfolog\u00eda + time-lapse + DGP-A, est\u00e1 mejorando progresivamente las tasas de implantaci\u00f3n por transferencia, especialmente en pacientes con edad materna avanzada, fallos de implantaci\u00f3n previos o abortos de repetici\u00f3n.<\/p>\n<p>En IMFER aplicamos las t\u00e9cnicas de evaluaci\u00f3n embrionaria m\u00e1s avanzadas disponibles en cada momento, adaptando el protocolo a las necesidades espec\u00edficas de cada paciente. Puedes ampliar informaci\u00f3n sobre el proceso de fecundaci\u00f3n in vitro en nuestra <a href=\"\/guia-completa-fecundacion-in-vitro\/\">gu\u00eda completa de FIV<\/a>.<\/p>\n<p class=\"imfer-article-cta-inline\">\u00bfTienes dudas sobre este tema? <a href=\"https:\/\/www.imfer.com\" target=\"_blank\" rel=\"noopener\">Consulta con nuestros especialistas en IMFER<\/a>.<\/p>\n<p><strong>Tambi\u00e9n puede interesarte:<\/strong> <a href=\"https:\/\/www.imferblog.com\/la-consanguinidad-duplicaba-el-riesgo-de-anomalias-congenitas\/\">Consanguinidad y anomal\u00edas cong\u00e9nitas: riesgos y opciones\u2026<\/a> y <a href=\"https:\/\/www.imferblog.com\/la-consanguinidad-duplicaba-el-riesgo-de-anomalias-congenitas\/\">Consanguinidad y anomal\u00edas cong\u00e9nitas: riesgos y opciones\u2026<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Uno de los factores que m\u00e1s influye en el \u00e9xito de un ciclo de fecundaci\u00f3n in vitro es la selecci\u00f3n del embri\u00f3n que se va a transferir al \u00fatero. Un embri\u00f3n de buena calidad tiene m\u00e1s probabilidades de implantarse y de llegar a buen t\u00e9rmino. Durante d\u00e9cadas, esa selecci\u00f3n se &#8230;<\/p>\n","protected":false},"author":1,"featured_media":5985,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[1289,1295,1294,7,77,1286],"class_list":["post-6433","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualidad","tag-actualidad","tag-embriologia","tag-embrion","tag-fertilidad","tag-fiv","tag-reproduccion-asistida","h-entry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.5 (Yoast SEO v27.6) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Selecci\u00f3n de embriones en FIV | IMFER Blog<\/title>\n<meta name=\"description\" content=\"La selecci\u00f3n del embri\u00f3n m\u00e1s adecuado para transferir es clave en la FIV. 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