{"id":38332,"date":"2018-03-09T09:37:51","date_gmt":"2018-03-09T09:37:51","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/productos-de-distorsion-acustica-parametros-de-normalidad-y-principios-de-aplicacion-clinica\/"},"modified":"2018-03-09T09:37:51","modified_gmt":"2018-03-09T09:37:51","slug":"productos-de-distorsion-acustica-parametros-de-normalidad-y-principios-de-aplicacion-clinica","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-medicas\/productos-de-distorsion-acustica-parametros-de-normalidad-y-principios-de-aplicacion-clinica\/","title":{"rendered":"Productos de distorsion acustica: parametros de normalidad y principios de aplicacion clinica."},"content":{"rendered":"<h2>Tesis doctoral de <strong> Mar\u00eda  Del Rio Valeiras <\/strong><\/h2>\n<p>Introduccion: los productos de distorsi\u00f3n ac\u00fastica (pd) son un tipo de otoemisiones ac\u00fasticas provocadas (oeap) que se obtienen tras la estimulaci\u00f3n de la c\u00f3clea con dos tonos puros simult\u00e1neos (f1 y f2) de frecuencias cercanas y caracter\u00edsticas prefijadas, llamados primarios. La principal ventaja que ofrecen respecto a otros tipos de oeap es su especificidad frecuencial, de forma que mediante la selecci\u00f3n de los primarios podemos \u00abbarrer\u00bb una amplia zona topogr\u00e1fica de la c\u00f3clea.  proposito: el prop\u00f3sito fundamental de este trabajo es realizar los pd en n\u00famero amplio de o\u00eddos con el f\u00edn de obtener un patr\u00f3n de normalidad con objeto de aplicar esta t\u00e9cnica a la cl\u00ednica diaria. Adem\u00e1s, hemos estudiado el efecto de los siguientes factores: sexo, edad, umbral de audici\u00f3n y o\u00eddo que se explora, en los pd. En segundo lugar, hemos realizado la prueba en un grupo de sujetos diagnosticados de hipoacusia coclear y retrococlear de diferente etiolog\u00eda, con el fin de analizar los resultados obtenidos y justificar la aplicaci\u00f3n en la cl\u00ednica de esta t\u00e9cnica.  material y metodos: para ello, hemos registrado los pd en un grupo de 144 o\u00eddos de 84 sujetos normooyentes elegidos al azar, en los que se descart\u00f3 la existencia de antecedentes de patolog\u00eda otol\u00f3gica, la exposici\u00f3n a trauma ac\u00fastico, la toma de otot\u00f3xicos o de hipoacusia familiar. En todos los casos realizamos una otoscopia, impedanciometr\u00eda y audiometr\u00eda tonal liminar (atl) que fueron normales. El sistema t\u00e9cnico empleado para la medici\u00f3n de los pd fue el modelo 330 de \u00abvirtual corporation\u00bb, versi\u00f3n 1.7 inv.  resultados: hemos obtenido que el 100% de los o\u00eddos normooyentes presentaron pd en la mayor parte de las bandas frecuenciales exploradas entre 1 y 8 khz, independientemente del sexo y del o\u00eddo que se explora. En el grupo de mayor edad ( =50 a\u00f1os) y en el de peor umbral auditivo (m\u00e1s de 20 db hl) encontramos una discreta menor incidencia en<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Productos de distorsion acustica: parametros de normalidad y principios de aplicacion clinica.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Productos de distorsion acustica: parametros de normalidad y principios de aplicacion clinica. <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Mar\u00eda  Del Rio Valeiras <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Santiago de compostela<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 26\/06\/1998<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Torcuato Labella Caballero<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: joaqu\u00edn Poch broto <\/li>\n<li>Jos\u00e9 Morales l\u00f3pez (vocal)<\/li>\n<li>Jos\u00e9 Otero costa (vocal)<\/li>\n<li>Manuel Sainz quevedo (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Mar\u00eda Del Rio Valeiras Introduccion: los productos de distorsi\u00f3n ac\u00fastica (pd) son un tipo de otoemisiones ac\u00fasticas [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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