{"id":7830,"date":"2012-08-27T14:53:56","date_gmt":"2012-08-27T14:53:56","guid":{"rendered":"http:\/\/cardiophile.org\/?p=7830"},"modified":"2023-05-06T15:39:32","modified_gmt":"2023-05-06T10:09:32","slug":"yu-index-of-longitudinal-tissue-doppler-dyssynchrony","status":"publish","type":"post","link":"https:\/\/johnsonfrancis.org\/professional\/yu-index-of-longitudinal-tissue-doppler-dyssynchrony\/","title":{"rendered":"Yu index of longitudinal tissue Doppler dyssynchrony"},"content":{"rendered":"<p><iframe loading=\"lazy\" width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/IY3iaQ4gNZU\" title=\"YouTube video player\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen=\"\"><\/iframe><\/p>\n<h2><span style=\"color: #008000;\">Yu index of longi<\/span><span style=\"color: #008000;\">tudinal tissue Doppler dyssynchrony<\/span><\/h2>\n<p><span style=\"color: #0000ff;\"><strong>Yu index of longitudinal tissue Doppler dyssynchrony<\/strong> <\/span>is&nbsp;the standard deviation of time to peak systolic velocities from the onset of the QRS complex. This is calculated after determining the time to peak systolic velocities from 12 sites. <em>A value of 32 or more milliseconds is considered to be significant dyssynchrony<\/em>. Measurement of dyssynchrony is used to assess the possibility of improvement with cardiac resynchronization therapy in heart failure. Region of interest for evaluation of dyssynchrony are placed in basal and mid left ventricular segments in three apical views: four chamber, two chamber and long axis.<\/p>\n<p>John et al evaluated Yu index along with other measures of echocardiographic cardiac dyssynchrony and correlated with long term survival after cardiac resynchronization therapy [1]. Study population was 229 consecutive patients with Class III-IV heart failure, with ejection 35% or less, and QRS width of 120 milliseconds or more, awaiting CRT. After adjustment for confounding baseline variables of ischemic etiology and QRS width, independent predictors of outcome were Yu Index and radial strain dyssynchrony.<\/p>\n<p><span style=\"color: #0000ff;\"><strong>Reference<\/strong><\/span><\/p>\n<ol>\n<li>John Gorcsan 3rd, Olusegun Oyenuga, Phillip J Habib, Hidekazu Tanaka, Evan C Adelstein, Hideyuki Hara, Dennis M McNamara, Samir Saba. <a href=\"https:\/\/www.ncbi.nlm.nih.gov\/pmc\/articles\/PMC3058421\/\">Relationship of Echocardiographic Dyssynchrony to Long-Term Survival After Cardiac Resynchronization Therapy<\/a>. Circulation. 2010 Nov 9;122(19):1910-8.<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>Yu index of longitudinal tissue Doppler dyssynchrony is\u00a0the standard deviation of time to peak systolic velocities from the onset of the QRS complex.<\/p>\n","protected":false},"author":1,"featured_media":59416,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"nf_dc_page":"","footnotes":""},"categories":[8],"tags":[1244,2217,3937,4283],"class_list":["post-7830","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-echocardiogram-library","tag-dyssynchrony","tag-longitudinal-tissue-doppler-dyssynchrony","tag-tissue-doppler","tag-yu-index"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Yu index of longitudinal tissue Doppler dyssynchrony - All About Cardiovascular System and Disorders<\/title>\n<meta name=\"description\" content=\"Yu index of longitudinal tissue Doppler dyssynchrony is\u00a0the standard deviation of time to peak systolic velocities from the onset of the QRS complex.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/johnsonfrancis.org\/professional\/yu-index-of-longitudinal-tissue-doppler-dyssynchrony\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Yu index of longitudinal tissue Doppler dyssynchrony - All About Cardiovascular System and Disorders\" \/>\n<meta property=\"og:description\" content=\"Yu index of longitudinal tissue Doppler dyssynchrony is\u00a0the standard deviation of time to peak systolic velocities from the onset of the QRS complex.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/johnsonfrancis.org\/professional\/yu-index-of-longitudinal-tissue-doppler-dyssynchrony\/\" \/>\n<meta property=\"og:site_name\" content=\"All About Cardiovascular System and Disorders\" \/>\n<meta property=\"article:published_time\" content=\"2012-08-27T14:53:56+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-05-06T10:09:32+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/johnsonfrancis.org\/professional\/wp-content\/uploads\/2012\/08\/Yu-Index-of-Longitudinal-Tissue-Doppler-Dyssynchrony.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"895\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Johnson Francis\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Johnson Francis\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/yu-index-of-longitudinal-tissue-doppler-dyssynchrony\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/yu-index-of-longitudinal-tissue-doppler-dyssynchrony\\\/\"},\"author\":{\"name\":\"Johnson Francis\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/#\\\/schema\\\/person\\\/5441d907049b914770f4bd98fb57feec\"},\"headline\":\"Yu index of longitudinal tissue Doppler dyssynchrony\",\"datePublished\":\"2012-08-27T14:53:56+00:00\",\"dateModified\":\"2023-05-06T10:09:32+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/yu-index-of-longitudinal-tissue-doppler-dyssynchrony\\\/\"},\"wordCount\":215,\"publisher\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/#\\\/schema\\\/person\\\/5441d907049b914770f4bd98fb57feec\"},\"image\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/yu-index-of-longitudinal-tissue-doppler-dyssynchrony\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/wp-content\\\/uploads\\\/2012\\\/08\\\/Yu-Index-of-Longitudinal-Tissue-Doppler-Dyssynchrony.jpg\",\"keywords\":[\"dyssynchrony\",\"longitudinal tissue Doppler dyssynchrony\",\"tissue Doppler\",\"Yu index\"],\"articleSection\":[\"Echocardiography\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/yu-index-of-longitudinal-tissue-doppler-dyssynchrony\\\/\",\"url\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/yu-index-of-longitudinal-tissue-doppler-dyssynchrony\\\/\",\"name\":\"Yu index of longitudinal tissue Doppler dyssynchrony - 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