{"id":84365,"date":"2017-04-25T23:58:37","date_gmt":"2017-04-26T05:58:37","guid":{"rendered":"https:\/\/americanpregnancy.org\/uncategorized\/amniocentesis\/"},"modified":"2026-06-05T09:49:21","modified_gmt":"2026-06-05T15:49:21","slug":"amniocentesis","status":"publish","type":"post","link":"https:\/\/americanpregnancy.org\/es\/pregnancy\/amniocentesis\/","title":{"rendered":"Amniocentesis"},"content":{"rendered":"<p>La <strong>amniocentesis<\/strong> es una prueba diagn\u00f3stica que puede ser recomendada por su profesional de la salud tras un resultado anormal en el <a title=\"Prueba de triple cribado\" href=\"https:\/\/americanpregnancy.org\/es\/pregnancy\/triple-screen-test\/\">triple screening<\/a>. Las inquietudes hereditarias o gen\u00e9ticas llevan a algunos padres a optar por la amniocentesis para determinar si el beb\u00e9 podr\u00eda presentar trastornos gen\u00e9ticos espec\u00edficos. <\/p>\n<h2>\u00bfC\u00f3mo se realiza la amniocentesis?<\/h2>\n<p>Se utiliza una <a title=\"Ecograf\u00eda: Sonograma\" href=\"https:\/\/americanpregnancy.org\/prenatal-testing\/ultrasound\/\">ecograf\u00eda<\/a> como gu\u00eda para determinar un lugar seguro para que la aguja entre en el saco amni\u00f3tico, de modo que el l\u00edquido pueda extraerse de forma segura. Se recoge una muestra de l\u00edquido amni\u00f3tico a trav\u00e9s de la aguja. El procedimiento dura unos 45 minutos, aunque la extracci\u00f3n del l\u00edquido lleva menos de cinco minutos.  <\/p>\n<p>El l\u00edquido amni\u00f3tico, que contiene c\u00e9lulas desprendidas por el feto, se env\u00eda al laboratorio para su an\u00e1lisis. Los resultados pueden tardar en recibirse desde unos pocos d\u00edas hasta un par de semanas. <\/p>\n<h3>\u00bfCu\u00e1ndo se realiza la amniocentesis?<\/h3>\n<p>La amniocentesis suele realizarse entre las semanas 14 y <a title=\"Semana 20 de embarazo\" href=\"https:\/\/americanpregnancy.org\/es\/pregnancy\/20-weeks-pregnant\/\">20<\/a>. Algunos centros m\u00e9dicos pueden realizar la amniocentesis ya en la <a title=\"Semana 11 del embarazo\" href=\"https:\/\/americanpregnancy.org\/es\/pregnancy\/11-weeks-pregnant\/\">semana 11<\/a>. <\/p>\n<p>La amniocentesis puede utilizarse m\u00e1s adelante en el <a href=\"https:\/\/americanpregnancy.org\/pregnancy\/pregnancy-health-wellness\/third-trimester\/\">tercer trimestre<\/a> por diversos motivos. Su profesional de la salud puede recomendar el procedimiento si sus membranas se han roto prematuramente, con el fin de evaluar posibles infecciones uterinas. La amniocentesis tambi\u00e9n puede ayudar a determinar la gravedad de la <a title=\"Anemia durante el embarazo\" href=\"https:\/\/americanpregnancy.org\/es\/pregnancy\/anemia-during-pregnancy\/\">anemia<\/a> fetal en beb\u00e9s con enfermedad por Rh, y ayudar a su m\u00e9dico a determinar si el feto requiere <a title=\"Transfusiones de sangre durante el embarazo\" href=\"https:\/\/americanpregnancy.org\/pregnancy-concerns\/blood-transfusions-during-pregnancy\/\">transfusiones de sangre<\/a> vitales.  <\/p>\n<p>A veces se realiza una amniocentesis para evaluar la madurez pulmonar. Si es as\u00ed, se hace poco antes del parto. <\/p>\n<h3>\u00bfQu\u00e9 busca la prueba de amniocentesis?<\/h3>\n<p>La amniocentesis detecta anomal\u00edas cromos\u00f3micas, defectos del tubo neural y trastornos gen\u00e9ticos. El <a title=\"S\u00edndrome de Down: Trisom\u00eda 21\" href=\"https:\/\/americanpregnancy.org\/es\/pregnancy\/down-syndrome\/\">s\u00edndrome de Down<\/a> o trisom\u00eda 21 es la anomal\u00eda cromos\u00f3mica m\u00e1s com\u00fan. Los trastornos gen\u00e9ticos incluyen afecciones como la fibrosis qu\u00edstica. El defecto del tubo neural m\u00e1s com\u00fan es la <a href=\"https:\/\/americanpregnancy.org\/es\/pregnancy\/spina-bifida\/\">espina b\u00edfida.<\/a>   <\/p>\n<p>La amniocentesis se utiliza ocasionalmente al final del embarazo para evaluar si los pulmones del beb\u00e9 est\u00e1n lo suficientemente maduros para que este pueda respirar por s\u00ed solo.<\/p>\n<p>La amniocentesis tambi\u00e9n permite acceder al ADN para realizar <a title=\"Pruebas de paternidad\" href=\"https:\/\/americanpregnancy.org\/prenatal-testing\/paternity-testing\/\">pruebas de paternidad<\/a> antes del parto. Se recoge el ADN del presunto padre y se compara con el ADN obtenido del beb\u00e9 durante la amniocentesis. Los resultados tienen una precisi\u00f3n del 99 % para determinar la paternidad.  <\/p>\n<h3>\u00bfQu\u00e9 significan los resultados de la amniocentesis?<\/h3>\n<p>La amniocentesis es una prueba diagn\u00f3stica que detecta anomal\u00edas cromos\u00f3micas, defectos del tubo neural y trastornos gen\u00e9ticos con altos niveles de precisi\u00f3n (98-99 %). Aunque las probabilidades de identificaci\u00f3n son altas, esta prueba no mide la gravedad de estos <a title=\"Defectos de nacimiento\" href=\"https:\/\/americanpregnancy.org\/birth-defects\/\">defectos de nacimiento<\/a>. <\/p>\n<p>Los niveles de <a title=\"Cribado de alfa-fetoprote\u00edna en suero materno (MSAFP)\" href=\"https:\/\/americanpregnancy.org\/prenatal-testing\/maternal-serum-alpha-fetoprotein-screening\/\">alfafetoprote\u00edna<\/a> y las ecograf\u00edas de nivel avanzado pueden ayudar a evaluar el grado de discapacidad que podr\u00eda estar presente.<\/p>\n<h3>\u00bfCu\u00e1les son los riesgos y efectos secundarios para la madre o el beb\u00e9?<\/h3>\n<p>Aunque la amniocentesis se considera un procedimiento seguro, se reconoce como una prueba diagn\u00f3stica invasiva que plantea riesgos potenciales. Seg\u00fan la Cl\u00ednica Mayo, se realiza aproximadamente 200.000 veces al a\u00f1o. El <a href=\"https:\/\/americanpregnancy.org\/es\/getting-pregnant\/pregnancy-loss\/signs-of-miscarriage\/\">aborto espont\u00e1neo<\/a> es el principal riesgo relacionado con la amniocentesis. <\/p>\n<p>El riesgo de aborto espont\u00e1neo oscila entre 1 de cada 400 y 1 de cada 200. En los centros donde la amniocentesis se realiza con regularidad, las tasas se acercan a <strong>1 de cada 400<\/strong>. Los abortos espont\u00e1neos pueden producirse por una infecci\u00f3n en el \u00fatero, la rotura de aguas o la inducci\u00f3n prematura del parto.  <\/p>\n<p>Aunque es extremadamente raro, es posible que la aguja entre en contacto con el beb\u00e9. Se toman grandes precauciones utilizando un <a title=\"Ecograf\u00eda: Sonograma\" href=\"https:\/\/americanpregnancy.org\/prenatal-testing\/ultrasound\/\">ecograma<\/a> para guiar la aguja lejos del beb\u00e9. La madre puede experimentar un dolor agudo cuando la aguja entra en la piel y de nuevo cuando entra en el \u00fatero.  <\/p>\n<p><strong>Tras la finalizaci\u00f3n del<\/strong> <strong>procedimiento, la madre puede experimentar otros efectos secundarios que incluyen:<\/strong><\/p>\n<ul>\n<li><a title=\"Calambres durante el embarazo\" href=\"\nhttps:\/\/americanpregnancy.org\/cramping-during-pregnancy\">Calambres<\/a><\/li>\n<li>P\u00e9rdida de l\u00edquido<\/li>\n<li>Irritaci\u00f3n leve alrededor del lugar de la punci\u00f3n<\/li>\n<\/ul>\n<p>P\u00f3ngase en contacto con su profesional de la salud si estas complicaciones persisten o empeoran.<\/p>\n<h3>\u00bfCu\u00e1les son las razones para realizar o no la prueba?<\/h3>\n<p>Las razones para realizar la prueba o no var\u00edan de una persona a otra y de una pareja a otra.<br \/>\n<strong>La realizaci\u00f3n de las pruebas y la confirmaci\u00f3n del diagn\u00f3stico le proporcionan<\/strong> <strong>ciertas oportunidades:<\/strong><\/p>\n<ul>\n<li>Buscar posibles intervenciones que puedan existir (por ejemplo, cirug\u00eda fetal para la <a title=\"Espina b\u00edfida\" href=\"https:\/\/americanpregnancy.org\/es\/pregnancy\/spina-bifida\/\">espina b\u00edfida<\/a>)<\/li>\n<li>Comenzar a planificar para un ni\u00f1o con necesidades especiales<\/li>\n<li>Empezar a abordar los cambios previstos en el estilo de vida<\/li>\n<li>Identificar grupos de apoyo y recursos<\/li>\n<\/ul>\n<p><strong>Algunas personas o parejas pueden optar por no realizarse pruebas o pruebas<\/strong> <strong>adicionales por diversos motivos:<\/strong><\/p>\n<ul>\n<li>Se sienten c\u00f3modos con los resultados sin importar cu\u00e1l sea el desenlace<\/li>\n<li>Por motivos personales, morales o religiosos, tomar la decisi\u00f3n de no llevar el embarazo a t\u00e9rmino no es una opci\u00f3n<\/li>\n<li>Algunos padres optan por no permitir ninguna prueba que suponga alg\u00fan riesgo de da\u00f1ar al beb\u00e9 en desarrollo<\/li>\n<\/ul>\n<p>Es importante analizar detenidamente los riesgos y beneficios de las pruebas con su profesional sanitario. Su profesional sanitario le ayudar\u00e1 a evaluar si los beneficios de los resultados podr\u00edan compensar cualquier riesgo del procedimiento. <\/p>\n<p class=\"citation-date\"><!--more--><\/p>\n<h4>\u00bfDesea saber m\u00e1s?<\/h4>\n<ul>\n<li><strong><a href=\"https:\/\/americanpregnancy.org\/es\/pregnancy\/25-weeks-pregnant\/\">Semana 25 de embarazo<\/a><\/strong><\/li>\n<li><strong><a href=\"https:\/\/americanpregnancy.org\/prenatal-testing\/paternity-testing\/\">Pruebas de paternidad<\/a><\/strong><\/li>\n<li><strong><a href=\"https:\/\/americanpregnancy.org\/es\/pregnancy\/cordocentesis\/\">Cordocentesis: Muestreo percut\u00e1neo de sangre umbilical<\/a><\/strong><\/li>\n<\/ul>\n<hr>\n<p class=\"citation-heading\">Recopilado utilizando informaci\u00f3n de las siguientes fuentes:<\/p>\n<p class=\"citation-source\">1. Williams Obstetrics Twenty-Second Ed. Cunningham, F. Gary, et al, Ch.  13.<\/p>\n<p class=\"citation-source\">2. Mayo Clinic Complete Book of Pregnancy &#038; Baby&#8217;s First Year. Johnson, Robert V., M.D., et al, Cap.  6.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>La amniocentesis es una prueba diagn\u00f3stica que puede ser recomendada por su profesional de la salud tras un resultado anormal en el triple screening. Las inquietudes hereditarias o gen\u00e9ticas llevan a algunos padres a optar por la amniocentesis para determinar si el beb\u00e9 podr\u00eda presentar trastornos gen\u00e9ticos espec\u00edficos. \u00bfC\u00f3mo se realiza la amniocentesis? Se utiliza [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":84366,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7629,8597],"tags":[],"faq-categories":[8401],"class_list":["post-84365","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-pregnancy","category-tests-to-support-your-pregnancy-es","faq-categories-no-faq"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.6 (Yoast SEO v28.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Amniocentesis - American Pregnancy Association<\/title>\n<meta name=\"description\" content=\"La amniocentesis es una prueba diagn\u00f3stica que puede ser recomendada por su profesional de la salud. 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