{"id":34964,"date":"1998-01-01T00:00:00","date_gmt":"1998-01-01T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/efecto-del-verapamil-sobre-variabilidad-de-la-frecuencia-cardiaca-potenciales-tardios-y-dispersion-del-qt-en-el-infarto-agudo-de-miocardio\/"},"modified":"1998-01-01T00:00:00","modified_gmt":"1998-01-01T00:00:00","slug":"efecto-del-verapamil-sobre-variabilidad-de-la-frecuencia-cardiaca-potenciales-tardios-y-dispersion-del-qt-en-el-infarto-agudo-de-miocardio","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ciencias-medicas\/efecto-del-verapamil-sobre-variabilidad-de-la-frecuencia-cardiaca-potenciales-tardios-y-dispersion-del-qt-en-el-infarto-agudo-de-miocardio\/","title":{"rendered":"Efecto del verapamil sobre variabilidad de la frecuencia cardiaca, potenciales tardios y dispersion del qt en el infarto agudo de miocardio."},"content":{"rendered":"<h2>Tesis doctoral de <strong> Eduardo Pinar Bermudez <\/strong><\/h2>\n<p>La monitorizaci\u00f3n con holter de 24 horas, el an\u00e1lisis de la variabilidad de frecuencia cardiaca (vfc), de la dispersi\u00f3n del qt (dqt) y del ecg con promediado de se\u00f1al (saecg) son t\u00e9cnicas no invasivas con utilidad pron\u00f3stica en pacientes con infarto agudo de miocardio (iam). El objetivo del estudio fue valorar las acciones del verapamil sobre estos indicadores de riesgo arr\u00edtmico. Se estudiaron 50 pacientes consecutivos con un primer iam, ritmo sinusal estable y fevi mayor que 0.40.  cada una de las t\u00e9cnicas fue realizada en cada paciente basalmente y tras 4 d\u00edas de tratamiento con verapamil retard (180 mg cada 12 horas). El verapamil redujo la fc en un 7% y la densidad de taquicardias supraventriculares. Unicamente disminuy\u00f3 la dqt en pacientes con valores basales mayores de 80 ms.  todos los par\u00e1metros de vfc en dominio de tiempo aumentaron significativamente tras la administraci\u00f3n del f\u00e1rmaco; as\u00ed, el sdnn pas\u00f3 de 87.1 +- 31.4 ms a 98.1 +- 30.3 (p &lt;0.05). Existi\u00f3 una correlaci\u00f3n inversa entre el incremento de vfc con verapamil y sus valores basales. El an\u00e1lisis espectral mostr\u00f3 un aumento significativo del contenido de alta frecuencia (58.5%), y una reducci\u00f3n de la energ\u00eda en la banda de baja frecuencia expresada en unidades normalizadas. Los pacientes diab\u00e9ticos no experimentaron cambios en la vfc tras la administraci\u00f3n de verapamil. Los par\u00e1metros del saecg no se modificaron con el verapamil. Concluimos que el verapamil aumenta la vfc y el tono parasimp\u00e1tico, disminuye la dqt en pacientes con valores elevados y no afecta el saecg en pacientes con iam.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Efecto del verapamil sobre variabilidad de la frecuencia cardiaca, potenciales tardios y dispersion del qt en el infarto agudo de miocardio.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Efecto del verapamil sobre variabilidad de la frecuencia cardiaca, potenciales tardios y dispersion del qt en el infarto agudo de miocardio. <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Eduardo Pinar Bermudez <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Murcia<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 01\/01\/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>Arcadio Garcia Alberola<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Tomas Quesada Perez <\/li>\n<li>Antonio Hern\u00e1ndez Madrid (vocal)<\/li>\n<li>Jes\u00fas Almendral Garrote (vocal)<\/li>\n<li>Juan  Antonio Ruiperez Abizanda (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Eduardo Pinar Bermudez La monitorizaci\u00f3n con holter de 24 horas, el an\u00e1lisis de la variabilidad de frecuencia [&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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