{"id":16376,"date":"2023-03-02T10:37:44","date_gmt":"2023-03-02T09:37:44","guid":{"rendered":"https:\/\/gravida.com\/?post_type=blog&#038;p=16376"},"modified":"2025-06-19T19:07:38","modified_gmt":"2025-06-19T17:07:38","slug":"preparation-cryotransfert","status":"publish","type":"post","link":"https:\/\/gravida.com\/fr\/blog\/preparation-cryotransfert\/","title":{"rendered":"Comment se pr\u00e9parer pour un cryotransfert ? Cycle naturel ou m\u00e9dicamenteux ?"},"content":{"rendered":"<p>La vitrification des embryons est une technique tr\u00e8s utilis\u00e9e dans le laboratoire de procr\u00e9ation m\u00e9dicalement assist\u00e9e. Elle consiste \u00e0 congeler tous les embryons ou les restes de bonne qualit\u00e9 apr\u00e8s un transfert frais, en vue d&rsquo;une utilisation ult\u00e9rieure. Ces embryons peuvent \u00eatre issus d&rsquo;un cycle de <strong><a href=\"https:\/\/gravida.com\/fr\/treatments-fr\/fecundacion-in-vitro-fiv\/\">f\u00e9condation in vitro avec ovocytes propres<\/a><\/strong> ou provenir d&rsquo;une <strong><a href=\"https:\/\/gravida.com\/fr\/treatments-fr\/reception-des-ovocytes\/\">donation<\/a><\/strong>.<\/p>\n<p>Cette technique est utile aussi bien pour les couples dont le transfert frais a \u00e9t\u00e9 annul\u00e9, qui n&rsquo;ont pas r\u00e9ussi \u00e0 concevoir lors du cycle frais, que pour ceux qui souhaitent une deuxi\u00e8me grossesse.<\/p>\n<p>La pr\u00e9paration pour un cycle de cryotransfert peut \u00eatre abord\u00e9e de deux mani\u00e8res :<br \/>\n\u2022 En suivant le cycle naturel de la patiente (si elle a des cycles r\u00e9guliers).<br \/>\n\u2022 En r\u00e9alisant une pr\u00e9paration endom\u00e9triale m\u00e9dicamenteuse.<\/p>\n<h3>Pr\u00e9paration avec cycle naturel<\/h3>\n<p>Dans ce type de protocole, des contr\u00f4les \u00e9chographiques r\u00e9guliers (CF) sont effectu\u00e9s pendant le cycle menstruel souhait\u00e9 pour le <strong><a href=\"https:\/\/gravida.com\/fr\/blog\/transfert-embryonnaire\/\">transfert embryonnaire<\/a><\/strong>. Ces contr\u00f4les peuvent \u00eatre accompagn\u00e9s de contr\u00f4les hormonaux sanguins (\u0153strog\u00e8nes, progest\u00e9rone et parfois lut\u00e9otropine).<\/p>\n<p>On recherche la phase p\u00e9riovulatoire, c&rsquo;est-\u00e0-dire proche de l&rsquo;ovulation : un follicule dominant d&rsquo;un diam\u00e8tre sup\u00e9rieur ou \u00e9gal \u00e0 17 mm, un endom\u00e8tre trilamin\u00e9 d&rsquo;une \u00e9paisseur comprise entre 8 et 15 mm et des niveaux hormonaux ad\u00e9quats.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\" wp-image-15088 aligncenter\" src=\"https:\/\/gravida.com\/wp-content\/uploads\/2023\/03\/endometrio-estimx-estrogenica.png\" alt=\"\" width=\"270\" height=\"177\" srcset=\"https:\/\/gravida.com\/wp-content\/uploads\/2023\/03\/endometrio-estimx-estrogenica.png 626w, https:\/\/gravida.com\/wp-content\/uploads\/2023\/03\/endometrio-estimx-estrogenica-300x197.png 300w, https:\/\/gravida.com\/wp-content\/uploads\/2023\/03\/endometrio-estimx-estrogenica-18x12.png 18w\" sizes=\"auto, (max-width: 270px) 100vw, 270px\" \/><br \/>\nUne fois les conditions pr\u00e9alables \u00e0 l&rsquo;ovulation spontan\u00e9e trouv\u00e9es et afin de mieux contr\u00f4ler la fen\u00eatre d&rsquo;implantation, il serait recommand\u00e9 d&rsquo;induire l&rsquo;ovulation avec une dose de chorionic gonadotropin humaine (HCG).<\/p>\n<h4>D\u00e9cong\u00e9lation et transfert embryonnaire<\/h4>\n<p>36 \u00e0 48 heures apr\u00e8s l&rsquo;administration de l&rsquo;HCG, ce sera le jour de l&rsquo;ovulation, il est donc consid\u00e9r\u00e9 comme le jour 0. Ce jour-l\u00e0 ou le lendemain, la patiente commence le soutien lut\u00e9al \u00e0 la progest\u00e9rone \u00e0 faible dose, car elle a d\u00e9j\u00e0 une s\u00e9cr\u00e9tion endog\u00e8ne par le corps jaune. La progest\u00e9rone peut \u00eatre administr\u00e9e par voie vaginale, sous-cutan\u00e9e ou intramusculaire.<\/p>\n<p>Ensuite, les jours de maturation de l&rsquo;endom\u00e8tre sont calcul\u00e9s jusqu&rsquo;\u00e0 la fen\u00eatre d&rsquo;implantation, \u00e0 partir du jour 0, en fonction des jours de vie auxquels les embryons ont \u00e9t\u00e9 congel\u00e9s ou vitrifi\u00e9s. C&rsquo;est ainsi que la date du cryotransfert sera programm\u00e9e.<\/p>\n<p>La proc\u00e9dure de cryotransfert ne diff\u00e8re pas de celle expliqu\u00e9e dans le post sur le <strong><a href=\"https:\/\/gravida.com\/fr\/blog\/transfert-embryonnaire\/\">transfert embryonnaire<\/a><\/strong>.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\" wp-image-15110 alignleft\" src=\"https:\/\/gravida.com\/wp-content\/uploads\/2023\/03\/tanque-nitrogeno.jpg\" alt=\"\" width=\"195\" height=\"244\" srcset=\"https:\/\/gravida.com\/wp-content\/uploads\/2023\/03\/tanque-nitrogeno.jpg 1024w, https:\/\/gravida.com\/wp-content\/uploads\/2023\/03\/tanque-nitrogeno-240x300.jpg 240w, https:\/\/gravida.com\/wp-content\/uploads\/2023\/03\/tanque-nitrogeno-819x1024.jpg 819w, https:\/\/gravida.com\/wp-content\/uploads\/2023\/03\/tanque-nitrogeno-768x960.jpg 768w, https:\/\/gravida.com\/wp-content\/uploads\/2023\/03\/tanque-nitrogeno-10x12.jpg 10w\" sizes=\"auto, (max-width: 195px) 100vw, 195px\" \/>Le jour du cryotransfert ou quelques jours avant, selon le plan de d\u00e9cong\u00e9lation, la <strong>d\u00e9cong\u00e9lation des embryons<\/strong> est r\u00e9alis\u00e9e et leur survie et \u00e9volution sont contr\u00f4l\u00e9es en laboratoire d&#8217;embryologie.<\/p>\n<p>10 \u00e0 14 jours apr\u00e8s le cryotransfert embryonnaire, un test de grossesse peut \u00eatre r\u00e9alis\u00e9 pour d\u00e9terminer si une gestation est en cours. La confirmation est effectu\u00e9e lors d&rsquo;une <strong><a href=\"https:\/\/youtu.be\/JKmScNGJGow\">\u00e9chographie<\/a><\/strong> 15 jours apr\u00e8s le test de grossesse.<\/p>\n<p>En cas de grossesse, il est recommand\u00e9 de poursuivre le traitement de soutien lut\u00e9al \u00e0 la progest\u00e9rone selon les indications du gyn\u00e9cologue.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-15074\" src=\"https:\/\/gravida.com\/wp-content\/uploads\/2023\/03\/ct-ciclo-natural.png\" alt=\"\" width=\"1151\" height=\"383\" srcset=\"https:\/\/gravida.com\/wp-content\/uploads\/2023\/03\/ct-ciclo-natural.png 1151w, https:\/\/gravida.com\/wp-content\/uploads\/2023\/03\/ct-ciclo-natural-300x100.png 300w, https:\/\/gravida.com\/wp-content\/uploads\/2023\/03\/ct-ciclo-natural-1024x341.png 1024w, https:\/\/gravida.com\/wp-content\/uploads\/2023\/03\/ct-ciclo-natural-768x256.png 768w, https:\/\/gravida.com\/wp-content\/uploads\/2023\/03\/ct-ciclo-natural-18x6.png 18w\" sizes=\"auto, (max-width: 1151px) 100vw, 1151px\" \/><\/p>\n<h3>Pr\u00e9paration avec cycle m\u00e9dicamenteux<\/h3>\n<p>Dans ce protocole, il est n\u00e9cessaire de bloquer la fonction ovarienne en premier lieu, puis de pr\u00e9parer l&rsquo;endom\u00e8tre.<\/p>\n<h4>Blocage de la fonction ovarienne<\/h4>\n<p><strong>Si la patiente a des cycles r\u00e9guliers<\/strong>, il est possible d&rsquo;opter pour une inhibition hypophysaire dans le cycle pr\u00e9c\u00e9dant la pr\u00e9paration endom\u00e9triale. Cela pr\u00e9vient une \u00e9ventuelle activit\u00e9 ovarienne dans le cycle suivant qui pourrait alt\u00e9rer la r\u00e9ceptivit\u00e9 endom\u00e9triale. Ce n&rsquo;est pas indispensable mais recommand\u00e9. Cette inhibition peut \u00eatre r\u00e9alis\u00e9e en administrant un agoniste de la GnRH (GnRHa) \u00e0 partir de la phase lut\u00e9ale tardive du cycle pr\u00e9c\u00e9dent, ou un antagoniste de la GnRH (GnRHant) dans le m\u00eame cycle, en cas d&rsquo;apparition d&rsquo;une activit\u00e9 ovarienne.<\/p>\n<ul>\n<li>Dans le cas du GnRHa, une seule dose de pr\u00e9paration depot peut \u00eatre utilis\u00e9e par voie sous-cutan\u00e9e ou intramusculaire, ou des doses quotidiennes sous-cutan\u00e9es, voire intranasales.<\/li>\n<li>Dans le cas du GnRHant, des doses quotidiennes sous-cutan\u00e9es seraient administr\u00e9es en cas de d\u00e9tection d&rsquo;une activit\u00e9 ovarienne.<\/li>\n<\/ul>\n<p><strong>Si la patiente a des cycles irr\u00e9guliers<\/strong>, il est possible de coordonner l&rsquo;administration de contraceptifs oraux pour r\u00e9guler le cycle avec l&rsquo;administration de l&rsquo;analogie de la GnRH.<\/p>\n<h4>Pr\u00e9paration endom\u00e9triale<\/h4>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-15013 alignright\" src=\"https:\/\/gravida.com\/wp-content\/uploads\/2023\/02\/mujer-parche-estradiol.png\" alt=\"\" width=\"179\" height=\"174\" srcset=\"https:\/\/gravida.com\/wp-content\/uploads\/2023\/02\/mujer-parche-estradiol.png 606w, https:\/\/gravida.com\/wp-content\/uploads\/2023\/02\/mujer-parche-estradiol-300x292.png 300w, https:\/\/gravida.com\/wp-content\/uploads\/2023\/02\/mujer-parche-estradiol-12x12.png 12w\" sizes=\"auto, (max-width: 179px) 100vw, 179px\" \/>La pr\u00e9paration commence entre le premier et le troisi\u00e8me jour du cycle suivant. Elle est r\u00e9alis\u00e9e avec de l&rsquo;<strong>estradiol<\/strong>. Celui-ci peut \u00eatre administr\u00e9 par voie orale ou transdermique. Il peut \u00eatre administr\u00e9 \u00e0 doses croissantes ou fixes selon le type de protocole.<\/p>\n<p>Entre le 12e et le 14e jour de la pr\u00e9paration endom\u00e9triale, une \u00e9chographie transvaginale peut \u00eatre programm\u00e9e pour mesurer principalement l&rsquo;\u00e9paisseur et l&rsquo;\u00e9costructure endom\u00e9triales. Les informations peuvent \u00eatre compl\u00e9t\u00e9es par une analyse sanguine pour d\u00e9terminer les niveaux hormonaux (\u0153strog\u00e8nes +\/- progest\u00e9rone).<\/p>\n<p>Une \u00e9paisseur endom\u00e9triale appropri\u00e9e serait comprise entre 8 et 15 mm, bien qu&rsquo;un minimum de 6 mm soit acceptable. L&rsquo;\u00e9costructure devrait \u00eatre trilamin\u00e9.<\/p>\n<h4>D\u00e9cong\u00e9lation et transfert embryonnaire<\/h4>\n<p>Ensuite, les jours de maturation de l&rsquo;endom\u00e8tre sont calcul\u00e9s jusqu&rsquo;\u00e0 la fen\u00eatre d&rsquo;implantation \u00e0 partir du jour 0, qui est le jour o\u00f9 l&rsquo;administration de progest\u00e9rone \u00e0 doses moyennes-\u00e9lev\u00e9es est initi\u00e9e. Dans ce cas, la date du cryotransfert peut \u00eatre programm\u00e9e en fonction des pr\u00e9f\u00e9rences de la patiente ou du programme, car il est possible de d\u00e9caler le jour de d\u00e9but de la progest\u00e9rone.<\/p>\n<p>La progest\u00e9rone peut \u00eatre administr\u00e9e par voie vaginale, sous-cutan\u00e9e ou intramusculaire.<\/p>\n<p>Les embryons sont g\u00e9n\u00e9ralement d\u00e9congel\u00e9s le m\u00eame jour que le transfert ou les jours pr\u00e9c\u00e9dents (selon le stade de cong\u00e9lation) et transf\u00e9r\u00e9s apr\u00e8s confirmation de leur survie et viabilit\u00e9.<\/p>\n<p>La proc\u00e9dure de cryotransfert ne diff\u00e8re pas de celle expliqu\u00e9e dans le post sur le <strong><a href=\"https:\/\/gravida.com\/fr\/blog\/transfert-embryonnaire\/\">transfert embryonnaire<\/a><\/strong>.<\/p>\n<p>10 \u00e0 14 jours apr\u00e8s le cryotransfert embryonnaire, un test de grossesse peut \u00eatre r\u00e9alis\u00e9 pour d\u00e9terminer si une gestation est en cours. La confirmation est effectu\u00e9e lors d&rsquo;une <strong><a href=\"https:\/\/www.youtube.com\/shorts\/JKmScNGJGow\">\u00e9chographie<\/a><\/strong> 15 jours apr\u00e8s le test de grossesse.<\/p>\n<p>En cas de grossesse, il est recommand\u00e9 de poursuivre le traitement de soutien lut\u00e9al \u00e0 la progest\u00e9rone selon les indications du gyn\u00e9cologue.<\/p>\n<p>Si vous souhaitez en savoir un peu plus sur la fa\u00e7on dont les embryons sont d\u00e9congel\u00e9s en laboratoire, nous vous invitons \u00e0 regarder la vid\u00e9o suivante de nos embryologistes chez Gravida.<\/p>\n<p><iframe loading=\"lazy\" title=\"Proceso de CRIOTRANSFERENCIA en GRAVIDA\" src=\"https:\/\/www.youtube.com\/embed\/UDQybmm30OQ\" width=\"320\" height=\"560\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n","protected":false},"excerpt":{"rendered":"<p>La vitrification des embryons est une technique tr\u00e8s utilis\u00e9e dans le laboratoire de procr\u00e9ation m\u00e9dicalement assist\u00e9e. Elle consiste \u00e0 congeler tous les embryons ou les restes de bonne qualit\u00e9 apr\u00e8s un transfert frais, en vue d&rsquo;une utilisation ult\u00e9rieure. Ces embryons peuvent \u00eatre issus d&rsquo;un cycle de f\u00e9condation in vitro avec ovocytes propres ou provenir d&rsquo;une [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":15104,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[136],"tags":[],"class_list":["post-16376","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tratamientos-de-reproduccion-asistida"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Comment se pr\u00e9parer pour un cryotransfert ?<\/title>\n<meta name=\"description\" content=\"La pr\u00e9paration pour un cryotransfert peut \u00eatre abord\u00e9e en suivant le cycle naturel ou en r\u00e9alisant une pr\u00e9paration endom\u00e9triale m\u00e9dicamenteuse.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/gravida.com\/fr\/blog\/preparation-cryotransfert\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Comment se pr\u00e9parer pour un cryotransfert ?\" \/>\n<meta property=\"og:description\" content=\"La pr\u00e9paration pour un cryotransfert peut \u00eatre abord\u00e9e en suivant le cycle naturel ou en r\u00e9alisant une pr\u00e9paration endom\u00e9triale m\u00e9dicamenteuse.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/gravida.com\/fr\/blog\/preparation-cryotransfert\/\" \/>\n<meta property=\"og:site_name\" content=\"Gravida\" \/>\n<meta property=\"article:published_time\" content=\"2023-03-02T09:37:44+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-06-19T17:07:38+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/gravida.com\/wp-content\/uploads\/2023\/03\/hands-of-a-scientist-in-the-laboratory-with-a-test-2022-01-12-08-13-49-utc.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2508\" \/>\n\t<meta property=\"og:image:height\" content=\"1672\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Dra. 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