{"id":3332,"date":"2023-03-02T16:49:31","date_gmt":"2023-03-02T16:49:31","guid":{"rendered":"https:\/\/heart-explained.org\/?page_id=3332"},"modified":"2025-03-24T16:50:14","modified_gmt":"2025-03-24T16:50:14","slug":"right-bundle-branch-block","status":"publish","type":"page","link":"https:\/\/heart-explained.org\/index.php\/right-bundle-branch-block\/","title":{"rendered":"Right bundle branch block"},"content":{"rendered":"<h5>Bundle branch blocks<\/h5>\n<h1>Right bundle branch block<\/h1>\n<h2>What is right bundle branch block<\/h2>\n<p>Bundle branch block is a disorder that affects the heart\u2019s electrical conduction system and causes a blockage of the regular electrical signals that tell it when and how to contract.\u00a0<\/p>\n<p>Normally, your heart sends electrical signals from the sinoatrial (SA) node, the heart\u2019s natural pacemaker, down to the atrioventricular (AV) node and then on to the bundle of His, which is a collection of muscle fibers specialized for transmitting electrical impulses. <\/p>\n<p><b>Heart contractions: RBBB vs normal heart<\/b><\/p>\n<p>\t\t\t\t\t<iframe loading=\"lazy\" \n    width=\"400\" \n    height=\"550\"\n    data-static=\"https:\/\/heart-explained.org\/wp-content\/uploads\/stats\/b\/b5_04_002.gif\"\n    data-animated=\"https:\/\/heart-explained.org\/anims\/b5_04\/b5_04_002.html\"\n    src=\"https:\/\/heart-explained.org\/wp-content\/uploads\/stats\/b\/b5_04_002.gif\"\n    frameborder=\"0\" \n    title=\"left bundle branch block\"><br \/>\n<\/iframe>\t\t\t\t<\/p>\n<p>The bundle of His then divides the signal into left and right branches and sends it on to the ventricles, the heart\u2019s lower chambers, where it tells them when to contract.\u00a0\u00a0<\/p>\n<p>If you have bundle branch block, the signals from the bundle of His to either your left or right ventricle are delayed or blocked.<\/p>\n<p>In <strong>right bundle branch block (RBBB)<\/strong> the right-hand electrical pathway is interrupted. The signal still reaches your right ventricle, but it travels there through your left ventricle and gets there slightly late. <\/p>\n<p>This can cause the contraction of your ventricles to be uncoordinated and it can make your heart\u2019s pumping mechanism less efficient.\u00a0\u00a0<\/p>\n<p>There are two types of <strong>RBBB<\/strong>, <strong>complete<\/strong> and <strong>incomplete<\/strong>.\u00a0<\/p>\n<p><strong> Incomplete RBBB<\/strong> is relatively common and usually doesn\u2019t cause problems, but <strong>complete RBBB<\/strong> is more complex. If you have <strong>complete RBBB<\/strong>, your doctor will want to evaluate you to make sure you don\u2019t have other underlying heart or circulation problems that might increase your risk of heart failure or a heart attack.\u00a0<\/p>\n<p>If you want learn more about a normal heartbeat take a look at <strong>Your heart: The basics<\/strong>.<\/p>\n<h2>What causes right bundle branch block?<\/h2>\n<p>Some people with <strong>RBBB<\/strong> were born with it, but for most people it develops as a result of some kind of damage to the heart\u2019s conduction system.\u00a0<\/p>\n<p>To learn more about how your heart&#8217;s conduction pathways and how they work, take a look at <a href=\"https:\/\/heart-explained.org\/index.php\/your-hearts-electrical-system\/\">Your heart\u2019s electrical system<\/a>.<\/p>\n<p><b>Electrical signals: RBBB vs normal heart<\/b><\/p>\n<p>\t\t\t\t\t<iframe loading=\"lazy\" \n    width=\"400\" \n    height=\"550\"\n    data-static=\"https:\/\/heart-explained.org\/wp-content\/uploads\/stats\/b\/b5_04_001.gif\"\n    data-animated=\"https:\/\/heart-explained.org\/anims\/b5_04\/b5_04_001.html\"\n    src=\"https:\/\/heart-explained.org\/wp-content\/uploads\/stats\/b\/b5_04_001.gif\"\n    frameborder=\"0\" \n    title=\"left bundle branch block\"><br \/>\n<\/iframe>\t\t\t\t<\/p>\n<p>Chronic pulmonary problems, a heart attack, and various types of cardiomyopathy (heart failure, for example) can all cause <strong>RBBB<\/strong>.\u00a0\u00a0<\/p>\n<p>However, some people with <strong>RBBB<\/strong> have structurally normal hearts with no sign of any damage. It\u2019s not clear what causes the <strong>RBBB<\/strong> in cases like this.<\/p>\n<p>Common causes of <strong>RBBB<\/strong> include:<\/p>\n<ul>\n<li>Pulmonary hypertension (high blood pressure in the lungs)<\/li>\n<li>COPD (chronic obstructive pulmonary disease)<\/li>\n<li><a href=\"https:\/\/heart-explained.org\/index.php\/heart-attack\/\">Heart attack<\/a><\/li>\n<li>Cardiomyopathy (heart muscle weakness or enlargement)<\/li>\n<li>Congenital conditions<\/li>\n<\/ul>\n<h2>What are the symptoms of right bundle branch block?<\/h2>\n<p>Usually, <strong>RBBB<\/strong> by itself doesn\u2019t cause any symptoms. You will not even be aware that you have it. <\/p>\n<p>However, <strong>RBBB<\/strong> is usually associated with other underlying heart or lung problems, and it may make the symptoms of those disorders worse.\u00a0<\/p>\n<h2>How is right bundle branch block treated?<\/h2>\n<p>If you have no symptoms and no other underlying heart or lung disorders, you will not need any treatment for <strong>RBBB<\/strong>. <\/p>\n<p>However, if your <strong>RBBB<\/strong> is related to other disorders, such as heart failure or pulmonary hypertension, your doctor will want to treat those disorders.<\/p>\n<h2>What are the aims of treatment?<\/h2>\n<p>Again, you probably won\u2019t need any treatment at all if you have <strong>RBBB<\/strong>, although of course your doctor will want to treat any other underlying disorders.\u00a0\u00a0<\/p>\n<p>If treatment is needed, the goal is to improve the efficiency of your heart\u2019s pumping mechanism and manage any other heart or lung disorders that may be causing problems.\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Bundle branch blocks Right bundle branch block What is right bundle branch block Bundle branch block is a disorder that affects the heart\u2019s electrical conduction system and causes a blockage of the regular electrical signals that tell it when and how to contract.\u00a0 Normally, your heart sends electrical signals from the sinoatrial (SA) node, the [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":7,"comment_status":"closed","ping_status":"closed","template":"elementor_header_footer","meta":{"site-sidebar-layout":"no-sidebar","site-content-layout":"page-builder","ast-site-content-layout":"full-width-container","site-content-style":"unboxed","site-sidebar-style":"unboxed","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":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","ast-disable-related-posts":"","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":"set","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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