{"id":13911,"date":"2015-11-30T09:05:01","date_gmt":"2015-11-30T03:35:01","guid":{"rendered":"http:\/\/www.cardiophile.com\/?p=13911"},"modified":"2022-12-11T20:32:16","modified_gmt":"2022-12-11T15:02:16","slug":"atrioventricular-node-av-node","status":"publish","type":"post","link":"https:\/\/johnsonfrancis.org\/general\/atrioventricular-node-av-node\/","title":{"rendered":"Atrioventricular node (AV node)"},"content":{"rendered":"<p><iframe loading=\"lazy\" width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/k9I-UGgOznE\" title=\"YouTube video player\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen=\"\"><\/iframe><br \/>\nAtrioventricular node (AV node) is an important part of the electrical conduction system of the heart. Normal functioning of the heart needs regular signal generation and transmission.<\/p>\n<p>Signal generation is usually the function of the SA node (sinoatrial node), a small structure situated in the upper part of the right upper chamber of the heart (right atrium). SA node is the natural pacemaker of the heart which generates regular electrical signals with a speed depending on the energy&nbsp;needs of the body. It is under the control of the brain through the nervous system.<\/p>\n<p><span style=\"color: #0000ff;\"><strong>Location and function of the AV node<\/strong><\/span><\/p>\n<p>AV node is situated in the lower part of the right atrium near the junction of the upper and lower chambers of the heart. Electrical signals reaching the AV node from the SA node are delayed for a short period, usually less than one fifth of a second before they are transmitted to the lower chambers (ventricles). This delay is needed for the contraction and emptying of the upper chambers before the lower chambers start contracting.<\/p>\n<p>The upper chambers of the heart receives the blood returning from the body and pass it on to the lower chambers which pump it to the body. If the natural delay produced by the AV node is not there, contraction of the lower chambers will be earlier, at a time when they have not been fully filled. This will reduce the output of the lower chambers.<\/p>\n<p><span style=\"color: #0000ff;\"><strong>Disease of the AV node<\/strong><\/span><\/p>\n<p>When the AV node is diseased, the conduction of signals from the SA node to the lower chambers of the heart becomes defective. If conduction is totally blocked, it is known as complete heart block. The heart rate becomes dangerously slow when there is complete heart block.<\/p>\n<p>An artificial pacemaker for the heart is needed when there is complete heart block. When the cause of AV nodal disease is temporary as in a heart attack, a temporary artificial pacemaker is used. If the cause of AV nodal disease is permanent, a permanent artificial pacemaker is needed.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Atrioventricular node (AV node) is an important part of the electrical conduction system of the heart. Normal functioning of the heart needs regular signal generation and transmission. Signal generation is usually the function of the SA node (sinoatrial node), a small structure situated in the upper part of the right upper chamber of the heart [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"nf_dc_page":"","footnotes":""},"categories":[7],"tags":[],"class_list":["post-13911","post","type-post","status-publish","format-standard","hentry","category-general"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Atrioventricular node (AV node) - All About Heart And Blood Vessels<\/title>\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\/general\/atrioventricular-node-av-node\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Atrioventricular node (AV node) - All About Heart And Blood Vessels\" \/>\n<meta property=\"og:description\" content=\"Atrioventricular node (AV node) is an important part of the electrical conduction system of the heart. Normal functioning of the heart needs regular signal generation and transmission. Signal generation is usually the function of the SA node (sinoatrial node), a small structure situated in the upper part of the right upper chamber of the heart [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/johnsonfrancis.org\/general\/atrioventricular-node-av-node\/\" \/>\n<meta property=\"og:site_name\" content=\"All About Heart And Blood Vessels\" \/>\n<meta property=\"article:published_time\" content=\"2015-11-30T03:35:01+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2022-12-11T15:02:16+00:00\" \/>\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=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/general\\\/atrioventricular-node-av-node\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/general\\\/atrioventricular-node-av-node\\\/\"},\"author\":{\"name\":\"Johnson Francis\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/general\\\/#\\\/schema\\\/person\\\/f35ea33ecf9c9923597de2691ebed1a7\"},\"headline\":\"Atrioventricular node (AV node)\",\"datePublished\":\"2015-11-30T03:35:01+00:00\",\"dateModified\":\"2022-12-11T15:02:16+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/general\\\/atrioventricular-node-av-node\\\/\"},\"wordCount\":349,\"commentCount\":0,\"articleSection\":[\"General\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/johnsonfrancis.org\\\/general\\\/atrioventricular-node-av-node\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/general\\\/atrioventricular-node-av-node\\\/\",\"url\":\"https:\\\/\\\/johnsonfrancis.org\\\/general\\\/atrioventricular-node-av-node\\\/\",\"name\":\"Atrioventricular node (AV node) - All About Heart And Blood Vessels\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/general\\\/#website\"},\"datePublished\":\"2015-11-30T03:35:01+00:00\",\"dateModified\":\"2022-12-11T15:02:16+00:00\",\"author\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/general\\\/#\\\/schema\\\/person\\\/f35ea33ecf9c9923597de2691ebed1a7\"},\"breadcrumb\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/general\\\/atrioventricular-node-av-node\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/johnsonfrancis.org\\\/general\\\/atrioventricular-node-av-node\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/general\\\/atrioventricular-node-av-node\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/johnsonfrancis.org\\\/general\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Atrioventricular node (AV node)\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/general\\\/#website\",\"url\":\"https:\\\/\\\/johnsonfrancis.org\\\/general\\\/\",\"name\":\"All About Heart And Blood Vessels\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/johnsonfrancis.org\\\/general\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/general\\\/#\\\/schema\\\/person\\\/f35ea33ecf9c9923597de2691ebed1a7\",\"name\":\"Johnson Francis\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/80861b82c3f559be9e413245c5643b6c483c93495507facfe32cf96ccd8bcffd?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/80861b82c3f559be9e413245c5643b6c483c93495507facfe32cf96ccd8bcffd?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/80861b82c3f559be9e413245c5643b6c483c93495507facfe32cf96ccd8bcffd?s=96&d=mm&r=g\",\"caption\":\"Johnson Francis\"},\"description\":\"Former Professor of Cardiology, Calicut Govt. Medical Kozhikode, Kerala, India. Editor-in-Chief, BMH Medical Journal\",\"url\":\"https:\\\/\\\/johnsonfrancis.org\\\/general\\\/author\\\/jf\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Atrioventricular node (AV node) - All About Heart And Blood Vessels","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/johnsonfrancis.org\/general\/atrioventricular-node-av-node\/","og_locale":"en_US","og_type":"article","og_title":"Atrioventricular node (AV node) - All About Heart And Blood Vessels","og_description":"Atrioventricular node (AV node) is an important part of the electrical conduction system of the heart. Normal functioning of the heart needs regular signal generation and transmission. Signal generation is usually the function of the SA node (sinoatrial node), a small structure situated in the upper part of the right upper chamber of the heart [&hellip;]","og_url":"https:\/\/johnsonfrancis.org\/general\/atrioventricular-node-av-node\/","og_site_name":"All About Heart And Blood Vessels","article_published_time":"2015-11-30T03:35:01+00:00","article_modified_time":"2022-12-11T15:02:16+00:00","author":"Johnson Francis","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Johnson Francis","Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/johnsonfrancis.org\/general\/atrioventricular-node-av-node\/#article","isPartOf":{"@id":"https:\/\/johnsonfrancis.org\/general\/atrioventricular-node-av-node\/"},"author":{"name":"Johnson Francis","@id":"https:\/\/johnsonfrancis.org\/general\/#\/schema\/person\/f35ea33ecf9c9923597de2691ebed1a7"},"headline":"Atrioventricular node (AV node)","datePublished":"2015-11-30T03:35:01+00:00","dateModified":"2022-12-11T15:02:16+00:00","mainEntityOfPage":{"@id":"https:\/\/johnsonfrancis.org\/general\/atrioventricular-node-av-node\/"},"wordCount":349,"commentCount":0,"articleSection":["General"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/johnsonfrancis.org\/general\/atrioventricular-node-av-node\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/johnsonfrancis.org\/general\/atrioventricular-node-av-node\/","url":"https:\/\/johnsonfrancis.org\/general\/atrioventricular-node-av-node\/","name":"Atrioventricular node (AV node) - All About Heart And Blood Vessels","isPartOf":{"@id":"https:\/\/johnsonfrancis.org\/general\/#website"},"datePublished":"2015-11-30T03:35:01+00:00","dateModified":"2022-12-11T15:02:16+00:00","author":{"@id":"https:\/\/johnsonfrancis.org\/general\/#\/schema\/person\/f35ea33ecf9c9923597de2691ebed1a7"},"breadcrumb":{"@id":"https:\/\/johnsonfrancis.org\/general\/atrioventricular-node-av-node\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/johnsonfrancis.org\/general\/atrioventricular-node-av-node\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/johnsonfrancis.org\/general\/atrioventricular-node-av-node\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/johnsonfrancis.org\/general\/"},{"@type":"ListItem","position":2,"name":"Atrioventricular node (AV node)"}]},{"@type":"WebSite","@id":"https:\/\/johnsonfrancis.org\/general\/#website","url":"https:\/\/johnsonfrancis.org\/general\/","name":"All About Heart And Blood Vessels","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/johnsonfrancis.org\/general\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/johnsonfrancis.org\/general\/#\/schema\/person\/f35ea33ecf9c9923597de2691ebed1a7","name":"Johnson Francis","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/80861b82c3f559be9e413245c5643b6c483c93495507facfe32cf96ccd8bcffd?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/80861b82c3f559be9e413245c5643b6c483c93495507facfe32cf96ccd8bcffd?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/80861b82c3f559be9e413245c5643b6c483c93495507facfe32cf96ccd8bcffd?s=96&d=mm&r=g","caption":"Johnson Francis"},"description":"Former Professor of Cardiology, Calicut Govt. Medical Kozhikode, Kerala, India. Editor-in-Chief, BMH Medical Journal","url":"https:\/\/johnsonfrancis.org\/general\/author\/jf\/"}]}},"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/johnsonfrancis.org\/general\/wp-json\/wp\/v2\/posts\/13911","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/johnsonfrancis.org\/general\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/johnsonfrancis.org\/general\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/johnsonfrancis.org\/general\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/johnsonfrancis.org\/general\/wp-json\/wp\/v2\/comments?post=13911"}],"version-history":[{"count":5,"href":"https:\/\/johnsonfrancis.org\/general\/wp-json\/wp\/v2\/posts\/13911\/revisions"}],"predecessor-version":[{"id":20953,"href":"https:\/\/johnsonfrancis.org\/general\/wp-json\/wp\/v2\/posts\/13911\/revisions\/20953"}],"wp:attachment":[{"href":"https:\/\/johnsonfrancis.org\/general\/wp-json\/wp\/v2\/media?parent=13911"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/johnsonfrancis.org\/general\/wp-json\/wp\/v2\/categories?post=13911"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/johnsonfrancis.org\/general\/wp-json\/wp\/v2\/tags?post=13911"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}