{"id":6031,"date":"2014-04-08T11:00:17","date_gmt":"2014-04-08T09:00:17","guid":{"rendered":"https:\/\/www.imferblog.com\/?p=6031"},"modified":"2026-05-10T21:13:09","modified_gmt":"2026-05-10T19:13:09","slug":"como-puede-respirar-un-bebe-dentro-del-vientre","status":"publish","type":"post","link":"https:\/\/www.imferblog.com\/?p=6031","title":{"rendered":"C\u00f3mo respira el feto dentro del \u00fatero | IMFER Blog"},"content":{"rendered":"<p>Uno de los misterios que m\u00e1s intriga a quienes esperan un beb\u00e9 es entender c\u00f3mo puede existir un ser humano completamente sumergido en l\u00edquido durante nueve meses sin ahogarse. La respuesta est\u00e1 en uno de los sistemas m\u00e1s elegantes que ha dise\u00f1ado la evoluci\u00f3n: la respiraci\u00f3n placentaria.<\/p>\n<h2>El feto no respira con los pulmones<\/h2>\n<p>La diferencia fundamental entre la respiraci\u00f3n antes y despu\u00e9s del nacimiento es que los pulmones fetales no participan en el intercambio gaseoso. El ox\u00edgeno que necesita el feto no llega a trav\u00e9s del aire, sino a trav\u00e9s de la sangre materna que fluye hasta la placenta.<\/p>\n<p>La placenta act\u00faa como un intercambiador gaseoso extraordinariamente eficiente. La sangre fetal, que llega con di\u00f3xido de carbono y sin ox\u00edgeno, pasa muy cerca de la sangre materna, que viene cargada de ox\u00edgeno desde los pulmones de la madre. A trav\u00e9s de una membrana muy delgada, el ox\u00edgeno difunde hacia la sangre del feto y el CO\u2082 difunde en la direcci\u00f3n contraria. Sin que los dos sistemas circulatorios se mezclen directamente, el intercambio se produce con notable eficacia.<\/p>\n<h2>El papel del l\u00edquido amni\u00f3tico<\/h2>\n<p>El l\u00edquido amni\u00f3tico aparece alrededor de la quinta semana de gestaci\u00f3n y va aumentando su volumen progresivamente. En la semana 12, supera los 50 mililitros; en la semana 20, alcanza aproximadamente 400 mililitros; en la semana 38, ronda los 1.000 mililitros. Si el embarazo se prolonga m\u00e1s all\u00e1 del t\u00e9rmino, el volumen comienza a reducirse.<\/p>\n<p>Este l\u00edquido cumple funciones esenciales. Protege al feto de los golpes y los movimientos bruscos. Mantiene una temperatura estable. Permite el movimiento y el desarrollo muscular. Y, crucialmente para la maduraci\u00f3n pulmonar, el feto lo inhala y exhala de forma activa mediante movimientos respiratorios que se inician alrededor de la semana 10-11 de gestaci\u00f3n.<\/p>\n<p>Esos movimientos no son una funci\u00f3n respiratoria en sentido estricto: el feto no extrae ox\u00edgeno del l\u00edquido amni\u00f3tico. Son ejercicios respiratorios que entrenan la musculatura del diafragma y el t\u00f3rax, y que son indispensables para el correcto desarrollo de los alv\u00e9olos pulmonares. Un feto que no realiza estos movimientos (por ejemplo, en casos de oligohidramnios severo, cuando hay muy poco l\u00edquido amni\u00f3tico) puede presentar pulmones hipopl\u00e1sicos, poco desarrollados, que generan dificultad respiratoria grave al nacer.<\/p>\n<h2>Qu\u00e9 pasa en el momento del nacimiento<\/h2>\n<p>El paso de la respiraci\u00f3n placentaria a la respiraci\u00f3n pulmonar es uno de los grandes cambios fisiol\u00f3gicos del nacimiento. Al nacer, los pulmones del beb\u00e9, que hasta ese momento estaban llenos de l\u00edquido, deben expandirse y comenzar a funcionar en segundos. El llanto del reci\u00e9n nacido no es solo una reacci\u00f3n al entorno: es el mecanismo que permite la primera inhalaci\u00f3n profunda que llena de aire los alv\u00e9olos.<\/p>\n<p>El sistema cardiovascular tambi\u00e9n se reconfigura en el momento del nacimiento, cerrando los cortocircuitos fetales que permit\u00edan que la sangre circulara sin pasar por los pulmones. Esta transici\u00f3n es extraordinariamente r\u00e1pida y, en la mayor\u00eda de los reci\u00e9n nacidos, se produce sin incidencias.<\/p>\n<p>En IMFER seguimos con atenci\u00f3n los embarazos de nuestras pacientes, incluyendo la valoraci\u00f3n del l\u00edquido amni\u00f3tico y los movimientos fetales en cada ecograf\u00eda de control. Si tienes dudas sobre el desarrollo de tu embarazo, nuestro equipo est\u00e1 disponible para acompa\u00f1arte.<\/p>\n<p>Para mas informacion, visita nuestra <a href=\"https:\/\/www.imferblog.com\/guia-infertilidad-pareja\/\">guia sobre reproduccion asistida<\/a>.<\/p>\n<p><strong>Tambi\u00e9n puede interesarte:<\/strong> <a href=\"https:\/\/www.imferblog.com\/liquido-amniotico-medicion-polihidramnios-oligohidramnios\/\">el liquido amniotico y su funcion<\/a> y <a href=\"https:\/\/www.imferblog.com\/rotura-fisura-bolsa-amniotica-sintomas\/\">rotura de la bolsa amniotica<\/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","protected":false},"excerpt":{"rendered":"<p>Uno de los misterios que m\u00e1s intriga a quienes esperan un beb\u00e9 es entender c\u00f3mo puede existir un ser humano completamente sumergido en l\u00edquido durante nueve meses sin ahogarse. La respuesta est\u00e1 en uno de los sistemas m\u00e1s elegantes que ha dise\u00f1ado la evoluci\u00f3n: la respiraci\u00f3n placentaria. El feto no &#8230;<\/p>\n","protected":false},"author":1,"featured_media":3671,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[1289,7,1286],"class_list":["post-6031","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualidad","tag-actualidad","tag-fertilidad","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>C\u00f3mo respira el feto dentro del \u00fatero | IMFER Blog | IMFER Blog<\/title>\n<meta name=\"description\" content=\"El feto no respira con los pulmones sino a trav\u00e9s de la placenta. Descubre c\u00f3mo funciona la respiraci\u00f3n fetal y cu\u00e1l es el papel del l\u00edquido amni\u00f3tico.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.imferblog.com\/?p=6031\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"C\u00f3mo respira el feto dentro del \u00fatero | IMFER Blog\" \/>\n<meta property=\"og:description\" content=\"El feto no respira con los pulmones sino a trav\u00e9s de la placenta. Descubre c\u00f3mo funciona la respiraci\u00f3n fetal y cu\u00e1l es el papel del l\u00edquido amni\u00f3tico.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.imferblog.com\/?p=6031\" \/>\n<meta property=\"og:site_name\" content=\"IMFER MURCIA\" \/>\n<meta property=\"article:published_time\" content=\"2014-04-08T09:00:17+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-05-10T19:13:09+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.imferblog.com\/wp-content\/uploads\/2012\/11\/feto.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"300\" \/>\n\t<meta property=\"og:image:height\" content=\"245\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"IMFER\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Escrito por\" \/>\n\t<meta name=\"twitter:data1\" content=\"IMFER\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tiempo de lectura\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.imferblog.com\\\/?p=6031#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.imferblog.com\\\/?p=6031\"},\"author\":{\"name\":\"IMFER\",\"@id\":\"https:\\\/\\\/www.imferblog.com\\\/#\\\/schema\\\/person\\\/b2d0cc149f6108a37354c3c2e31393a6\"},\"headline\":\"C\u00f3mo respira el feto dentro del \u00fatero | IMFER Blog\",\"datePublished\":\"2014-04-08T09:00:17+00:00\",\"dateModified\":\"2026-05-10T19:13:09+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.imferblog.com\\\/?p=6031\"},\"wordCount\":623,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/www.imferblog.com\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.imferblog.com\\\/?p=6031#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.imferblog.com\\\/wp-content\\\/uploads\\\/2012\\\/11\\\/feto.jpg\",\"keywords\":[\"actualidad\",\"Fertilidad\",\"reproduccion asistida\"],\"articleSection\":[\"Actualidad\"],\"inLanguage\":\"es\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.imferblog.com\\\/?p=6031#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.imferblog.com\\\/?p=6031\",\"url\":\"https:\\\/\\\/www.imferblog.com\\\/?p=6031\",\"name\":\"C\u00f3mo respira el feto dentro del \u00fatero | IMFER Blog | IMFER Blog\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.imferblog.com\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.imferblog.com\\\/?p=6031#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.imferblog.com\\\/?p=6031#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.imferblog.com\\\/wp-content\\\/uploads\\\/2012\\\/11\\\/feto.jpg\",\"datePublished\":\"2014-04-08T09:00:17+00:00\",\"dateModified\":\"2026-05-10T19:13:09+00:00\",\"description\":\"El feto no respira con los pulmones sino a trav\u00e9s de la placenta. Descubre c\u00f3mo funciona la respiraci\u00f3n fetal y cu\u00e1l es el papel del l\u00edquido amni\u00f3tico.\",\"inLanguage\":\"es\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.imferblog.com\\\/?p=6031\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"es\",\"@id\":\"https:\\\/\\\/www.imferblog.com\\\/?p=6031#primaryimage\",\"url\":\"https:\\\/\\\/www.imferblog.com\\\/wp-content\\\/uploads\\\/2012\\\/11\\\/feto.jpg\",\"contentUrl\":\"https:\\\/\\\/www.imferblog.com\\\/wp-content\\\/uploads\\\/2012\\\/11\\\/feto.jpg\",\"width\":\"300\",\"height\":\"245\"},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.imferblog.com\\\/#website\",\"url\":\"https:\\\/\\\/www.imferblog.com\\\/\",\"name\":\"IMFER MURCIA\",\"description\":\"Blog donde encontrar\u00e1s todo lo que quieres saber de fertilidad\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.imferblog.com\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.imferblog.com\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"es\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/www.imferblog.com\\\/#organization\",\"name\":\"IMFER\",\"url\":\"https:\\\/\\\/www.imferblog.com\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"es\",\"@id\":\"https:\\\/\\\/www.imferblog.com\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/www.imferblog.com\\\/wp-content\\\/uploads\\\/2014\\\/11\\\/foto-logo-imfer-generica.jpg\",\"contentUrl\":\"https:\\\/\\\/www.imferblog.com\\\/wp-content\\\/uploads\\\/2014\\\/11\\\/foto-logo-imfer-generica.jpg\",\"width\":760,\"height\":351,\"caption\":\"IMFER\"},\"image\":{\"@id\":\"https:\\\/\\\/www.imferblog.com\\\/#\\\/schema\\\/logo\\\/image\\\/\"}},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/www.imferblog.com\\\/#\\\/schema\\\/person\\\/b2d0cc149f6108a37354c3c2e31393a6\",\"name\":\"IMFER\",\"sameAs\":[\"http:\\\/\\\/www.imfer.com\",\"imfer\"],\"url\":\"https:\\\/\\\/www.imferblog.com\\\/?author=1\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"C\u00f3mo respira el feto dentro del \u00fatero | IMFER Blog | IMFER Blog","description":"El feto no respira con los pulmones sino a trav\u00e9s de la placenta. Descubre c\u00f3mo funciona la respiraci\u00f3n fetal y cu\u00e1l es el papel del l\u00edquido amni\u00f3tico.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.imferblog.com\/?p=6031","og_locale":"es_ES","og_type":"article","og_title":"C\u00f3mo respira el feto dentro del \u00fatero | IMFER Blog","og_description":"El feto no respira con los pulmones sino a trav\u00e9s de la placenta. Descubre c\u00f3mo funciona la respiraci\u00f3n fetal y cu\u00e1l es el papel del l\u00edquido amni\u00f3tico.","og_url":"https:\/\/www.imferblog.com\/?p=6031","og_site_name":"IMFER MURCIA","article_published_time":"2014-04-08T09:00:17+00:00","article_modified_time":"2026-05-10T19:13:09+00:00","og_image":[{"width":300,"height":245,"url":"https:\/\/www.imferblog.com\/wp-content\/uploads\/2012\/11\/feto.jpg","type":"image\/jpeg"}],"author":"IMFER","twitter_card":"summary_large_image","twitter_misc":{"Escrito por":"IMFER","Tiempo de lectura":"3 minutos"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.imferblog.com\/?p=6031#article","isPartOf":{"@id":"https:\/\/www.imferblog.com\/?p=6031"},"author":{"name":"IMFER","@id":"https:\/\/www.imferblog.com\/#\/schema\/person\/b2d0cc149f6108a37354c3c2e31393a6"},"headline":"C\u00f3mo respira el feto dentro del \u00fatero | IMFER Blog","datePublished":"2014-04-08T09:00:17+00:00","dateModified":"2026-05-10T19:13:09+00:00","mainEntityOfPage":{"@id":"https:\/\/www.imferblog.com\/?p=6031"},"wordCount":623,"commentCount":0,"publisher":{"@id":"https:\/\/www.imferblog.com\/#organization"},"image":{"@id":"https:\/\/www.imferblog.com\/?p=6031#primaryimage"},"thumbnailUrl":"https:\/\/www.imferblog.com\/wp-content\/uploads\/2012\/11\/feto.jpg","keywords":["actualidad","Fertilidad","reproduccion asistida"],"articleSection":["Actualidad"],"inLanguage":"es","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/www.imferblog.com\/?p=6031#respond"]}]},{"@type":"WebPage","@id":"https:\/\/www.imferblog.com\/?p=6031","url":"https:\/\/www.imferblog.com\/?p=6031","name":"C\u00f3mo respira el feto dentro del \u00fatero | IMFER Blog | IMFER Blog","isPartOf":{"@id":"https:\/\/www.imferblog.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.imferblog.com\/?p=6031#primaryimage"},"image":{"@id":"https:\/\/www.imferblog.com\/?p=6031#primaryimage"},"thumbnailUrl":"https:\/\/www.imferblog.com\/wp-content\/uploads\/2012\/11\/feto.jpg","datePublished":"2014-04-08T09:00:17+00:00","dateModified":"2026-05-10T19:13:09+00:00","description":"El feto no respira con los pulmones sino a trav\u00e9s de la placenta. Descubre c\u00f3mo funciona la respiraci\u00f3n fetal y cu\u00e1l es el papel del l\u00edquido amni\u00f3tico.","inLanguage":"es","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.imferblog.com\/?p=6031"]}]},{"@type":"ImageObject","inLanguage":"es","@id":"https:\/\/www.imferblog.com\/?p=6031#primaryimage","url":"https:\/\/www.imferblog.com\/wp-content\/uploads\/2012\/11\/feto.jpg","contentUrl":"https:\/\/www.imferblog.com\/wp-content\/uploads\/2012\/11\/feto.jpg","width":"300","height":"245"},{"@type":"WebSite","@id":"https:\/\/www.imferblog.com\/#website","url":"https:\/\/www.imferblog.com\/","name":"IMFER MURCIA","description":"Blog donde encontrar\u00e1s todo lo que quieres saber de fertilidad","publisher":{"@id":"https:\/\/www.imferblog.com\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.imferblog.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"es"},{"@type":"Organization","@id":"https:\/\/www.imferblog.com\/#organization","name":"IMFER","url":"https:\/\/www.imferblog.com\/","logo":{"@type":"ImageObject","inLanguage":"es","@id":"https:\/\/www.imferblog.com\/#\/schema\/logo\/image\/","url":"https:\/\/www.imferblog.com\/wp-content\/uploads\/2014\/11\/foto-logo-imfer-generica.jpg","contentUrl":"https:\/\/www.imferblog.com\/wp-content\/uploads\/2014\/11\/foto-logo-imfer-generica.jpg","width":760,"height":351,"caption":"IMFER"},"image":{"@id":"https:\/\/www.imferblog.com\/#\/schema\/logo\/image\/"}},{"@type":"Person","@id":"https:\/\/www.imferblog.com\/#\/schema\/person\/b2d0cc149f6108a37354c3c2e31393a6","name":"IMFER","sameAs":["http:\/\/www.imfer.com","imfer"],"url":"https:\/\/www.imferblog.com\/?author=1"}]}},"views":35653,"_links":{"self":[{"href":"https:\/\/www.imferblog.com\/index.php?rest_route=\/wp\/v2\/posts\/6031","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.imferblog.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.imferblog.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.imferblog.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.imferblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=6031"}],"version-history":[{"count":0,"href":"https:\/\/www.imferblog.com\/index.php?rest_route=\/wp\/v2\/posts\/6031\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.imferblog.com\/index.php?rest_route=\/wp\/v2\/media\/3671"}],"wp:attachment":[{"href":"https:\/\/www.imferblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6031"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.imferblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6031"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.imferblog.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6031"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}