Fundamentos biomédicos y éticos de la criopreservación de embriones

As part of Assisted Reproductive Technologies (ART), the advent of embryo freezing lowered the number of embryos transferred, decreasing multiple births without jeopardizing pregnancy rates. Using vitrification technology, 90% of embryos survive after thawing, producing clinical pregnancy rates simi...

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Autores principales:	Zegers-Hochschild,Fernando, Crosby,Javier A, Salas,Sofía R
Lenguaje:	Spanish / Castilian
Publicado:	Sociedad Médica de Santiago 2014
Materias:	Cryopreservation Embryo dispositions Embryo research Legislation Moral obligations Reproductive techniques
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0034-98872014000700010
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spelling	oai:scielo:S0034-988720140007000102014-12-10Fundamentos biomédicos y éticos de la criopreservación de embrionesZegers-Hochschild,FernandoCrosby,Javier ASalas,Sofía R Cryopreservation Embryo dispositions Embryo research Legislation Moral obligations Reproductive techniques As part of Assisted Reproductive Technologies (ART), the advent of embryo freezing lowered the number of embryos transferred, decreasing multiple births without jeopardizing pregnancy rates. Using vitrification technology, 90% of embryos survive after thawing, producing clinical pregnancy rates similar to those of fresh embryos (41.6%y 44.3% respectively). Furthermore, cumulative pregnancy rates, obtained after transferring fresh plus frozen/thawed embryos, can reach 70%. Frozen embryo transfers (FET) are reported by six of seven institutions, which are part of the Chilean ART registry, and altogether constitute 22.8% of all ART procedures. Increasing use of cryopreservation lowered overall multiple gestations from 33% in 1995 to 23% in 2011, reducing pre term births and perinatal mortality. For many people, embryo freezing generates ethical dilemmas, due to the potential risks to which embryos are exposed, and the uncontrolled accumulation and disposal of human embryos. Scientific evidence today shows that frozen/thawed embryos are not exposed to disproportionate risks, and by hindering its use, both women and their children are exposed to the risks of multiple gestation, repeated cycles of ovarian hormonal stimulation or the impossibility to afford repeated ART cycles. In this article, we provide biomedical, as well as ethical, arguments to sustain that embryo cryopreservation is not only justified but fundamental when offering infertility treatment with ART.info:eu-repo/semantics/openAccessSociedad Médica de SantiagoRevista médica de Chile v.142 n.7 20142014-07-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0034-98872014000700010es10.4067/S0034-98872014000700010
institution	Scielo Chile
collection	Scielo Chile
language	Spanish / Castilian
topic	Cryopreservation Embryo dispositions Embryo research Legislation Moral obligations Reproductive techniques
spellingShingle	Cryopreservation Embryo dispositions Embryo research Legislation Moral obligations Reproductive techniques Zegers-Hochschild,Fernando Crosby,Javier A Salas,Sofía R Fundamentos biomédicos y éticos de la criopreservación de embriones
description	As part of Assisted Reproductive Technologies (ART), the advent of embryo freezing lowered the number of embryos transferred, decreasing multiple births without jeopardizing pregnancy rates. Using vitrification technology, 90% of embryos survive after thawing, producing clinical pregnancy rates similar to those of fresh embryos (41.6%y 44.3% respectively). Furthermore, cumulative pregnancy rates, obtained after transferring fresh plus frozen/thawed embryos, can reach 70%. Frozen embryo transfers (FET) are reported by six of seven institutions, which are part of the Chilean ART registry, and altogether constitute 22.8% of all ART procedures. Increasing use of cryopreservation lowered overall multiple gestations from 33% in 1995 to 23% in 2011, reducing pre term births and perinatal mortality. For many people, embryo freezing generates ethical dilemmas, due to the potential risks to which embryos are exposed, and the uncontrolled accumulation and disposal of human embryos. Scientific evidence today shows that frozen/thawed embryos are not exposed to disproportionate risks, and by hindering its use, both women and their children are exposed to the risks of multiple gestation, repeated cycles of ovarian hormonal stimulation or the impossibility to afford repeated ART cycles. In this article, we provide biomedical, as well as ethical, arguments to sustain that embryo cryopreservation is not only justified but fundamental when offering infertility treatment with ART.
author	Zegers-Hochschild,Fernando Crosby,Javier A Salas,Sofía R
author_facet	Zegers-Hochschild,Fernando Crosby,Javier A Salas,Sofía R
author_sort	Zegers-Hochschild,Fernando
title	Fundamentos biomédicos y éticos de la criopreservación de embriones
title_short	Fundamentos biomédicos y éticos de la criopreservación de embriones
title_full	Fundamentos biomédicos y éticos de la criopreservación de embriones
title_fullStr	Fundamentos biomédicos y éticos de la criopreservación de embriones
title_full_unstemmed	Fundamentos biomédicos y éticos de la criopreservación de embriones
title_sort	fundamentos biomédicos y éticos de la criopreservación de embriones
publisher	Sociedad Médica de Santiago
publishDate	2014
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0034-98872014000700010
work_keys_str_mv	AT zegershochschildfernando fundamentosbiomedicosyeticosdelacriopreservaciondeembriones AT crosbyjaviera fundamentosbiomedicosyeticosdelacriopreservaciondeembriones AT salassofiar fundamentosbiomedicosyeticosdelacriopreservaciondeembriones
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Fundamentos biomédicos y éticos de la criopreservación de embriones

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