{"id":9941,"date":"2010-01-23T12:36:29","date_gmt":"2010-01-23T12:36:29","guid":{"rendered":"http:\/\/cardiophile.org\/?p=3700"},"modified":"2023-11-13T20:37:00","modified_gmt":"2023-11-13T15:07:00","slug":"supraventricular-tachycardia-2","status":"publish","type":"post","link":"https:\/\/johnsonfrancis.org\/professional\/supraventricular-tachycardia-2\/","title":{"rendered":"Supraventricular tachycardia"},"content":{"rendered":"<p><iframe loading=\"lazy\" width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/NaMjGYV5UzQ?si=KurVU9u8g7einBac\" 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;\">Supraventricular tachycardia<\/span><\/h2>\n<p>Supraventricular tachycardia is identified as a narrow QRS tachycardia, often with barely discernible P waves. Common forms of SVT are atrioventricular nodal reentrant tachycardia (AVNRT) and accessory pathway mediated atrioventricular reentrant tachycardia (AVRT). Ectopic atrial tachycardia is a rarer variety of SVT. Carotid sinus massage is useful in terminating some of these tachycardias. In others, it may produce an AV block making the P waves more visible and hence the diagnosis becomes easier.<\/p>\n<p>If AV block occurs and the tachycardia is continuing, it excludes AVRT and most cases of AVNRT. Ectopic atrial tachycardia usually continues with either a fixed ratio or variable AV block. If the tachycardia does not terminate with carotid sinus massage, adenosine is usually the first drug to be given. It is a short acting drug and terminates most cases of SVT. Adenosine can worsen bronchospasm in asthmatic individuals. In ectopic atrial tachycardia the transient AV block produced by adenosine makes the diagnosis more evident. The same situation may occur in atrial flutter with 1:1 conduction.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Supraventricular tachycardia (SVT) is identified as a narrow QRS tachycardia, often with barely discernible P waves.<\/p>\n","protected":false},"author":1,"featured_media":37167,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"nf_dc_page":"","footnotes":""},"categories":[6],"tags":[],"class_list":["post-9941","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ecg-electrophysiology"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Supraventricular tachycardia<\/title>\n<meta name=\"description\" content=\"Supraventricular tachycardia (SVT) is identified as a narrow QRS tachycardia, often with barely discernible P waves.\" \/>\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\/supraventricular-tachycardia-2\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Supraventricular tachycardia\" \/>\n<meta property=\"og:description\" content=\"Supraventricular tachycardia (SVT) is identified as a narrow QRS tachycardia, often with barely discernible P waves.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/johnsonfrancis.org\/professional\/supraventricular-tachycardia-2\/\" \/>\n<meta property=\"og:site_name\" content=\"All About Cardiovascular System and Disorders\" \/>\n<meta property=\"article:published_time\" content=\"2010-01-23T12:36:29+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-11-13T15:07:00+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=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/supraventricular-tachycardia-2\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/supraventricular-tachycardia-2\\\/\"},\"author\":{\"name\":\"Johnson Francis\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/#\\\/schema\\\/person\\\/5441d907049b914770f4bd98fb57feec\"},\"headline\":\"Supraventricular tachycardia\",\"datePublished\":\"2010-01-23T12:36:29+00:00\",\"dateModified\":\"2023-11-13T15:07:00+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/supraventricular-tachycardia-2\\\/\"},\"wordCount\":172,\"publisher\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/#\\\/schema\\\/person\\\/5441d907049b914770f4bd98fb57feec\"},\"image\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/supraventricular-tachycardia-2\\\/#primaryimage\"},\"thumbnailUrl\":\"\",\"articleSection\":[\"ECG \\\/ Electrophysiology\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/supraventricular-tachycardia-2\\\/\",\"url\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/supraventricular-tachycardia-2\\\/\",\"name\":\"Supraventricular tachycardia\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/supraventricular-tachycardia-2\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/supraventricular-tachycardia-2\\\/#primaryimage\"},\"thumbnailUrl\":\"\",\"datePublished\":\"2010-01-23T12:36:29+00:00\",\"dateModified\":\"2023-11-13T15:07:00+00:00\",\"description\":\"Supraventricular tachycardia (SVT) is identified as a narrow QRS tachycardia, often with barely discernible P waves.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/supraventricular-tachycardia-2\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/supraventricular-tachycardia-2\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/supraventricular-tachycardia-2\\\/#primaryimage\",\"url\":\"\",\"contentUrl\":\"\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/supraventricular-tachycardia-2\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Supraventricular tachycardia\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/#website\",\"url\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/\",\"name\":\"All About Cardiovascular System and Disorders\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/#\\\/schema\\\/person\\\/5441d907049b914770f4bd98fb57feec\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":[\"Person\",\"Organization\"],\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/#\\\/schema\\\/person\\\/5441d907049b914770f4bd98fb57feec\",\"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\"},\"logo\":{\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/80861b82c3f559be9e413245c5643b6c483c93495507facfe32cf96ccd8bcffd?s=96&d=mm&r=g\"},\"description\":\"Former Professor of Cardiology, Calicut Govt. Medical Kozhikode, Kerala, India. Editor-in-Chief, BMH Medical Journal\",\"url\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/author\\\/jf\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Supraventricular tachycardia","description":"Supraventricular tachycardia (SVT) is identified as a narrow QRS tachycardia, often with barely discernible P waves.","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\/professional\/supraventricular-tachycardia-2\/","og_locale":"en_US","og_type":"article","og_title":"Supraventricular tachycardia","og_description":"Supraventricular tachycardia (SVT) is identified as a narrow QRS tachycardia, often with barely discernible P waves.","og_url":"https:\/\/johnsonfrancis.org\/professional\/supraventricular-tachycardia-2\/","og_site_name":"All About Cardiovascular System and Disorders","article_published_time":"2010-01-23T12:36:29+00:00","article_modified_time":"2023-11-13T15:07:00+00:00","author":"Johnson Francis","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Johnson Francis","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/johnsonfrancis.org\/professional\/supraventricular-tachycardia-2\/#article","isPartOf":{"@id":"https:\/\/johnsonfrancis.org\/professional\/supraventricular-tachycardia-2\/"},"author":{"name":"Johnson Francis","@id":"https:\/\/johnsonfrancis.org\/professional\/#\/schema\/person\/5441d907049b914770f4bd98fb57feec"},"headline":"Supraventricular tachycardia","datePublished":"2010-01-23T12:36:29+00:00","dateModified":"2023-11-13T15:07:00+00:00","mainEntityOfPage":{"@id":"https:\/\/johnsonfrancis.org\/professional\/supraventricular-tachycardia-2\/"},"wordCount":172,"publisher":{"@id":"https:\/\/johnsonfrancis.org\/professional\/#\/schema\/person\/5441d907049b914770f4bd98fb57feec"},"image":{"@id":"https:\/\/johnsonfrancis.org\/professional\/supraventricular-tachycardia-2\/#primaryimage"},"thumbnailUrl":"","articleSection":["ECG \/ Electrophysiology"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/johnsonfrancis.org\/professional\/supraventricular-tachycardia-2\/","url":"https:\/\/johnsonfrancis.org\/professional\/supraventricular-tachycardia-2\/","name":"Supraventricular tachycardia","isPartOf":{"@id":"https:\/\/johnsonfrancis.org\/professional\/#website"},"primaryImageOfPage":{"@id":"https:\/\/johnsonfrancis.org\/professional\/supraventricular-tachycardia-2\/#primaryimage"},"image":{"@id":"https:\/\/johnsonfrancis.org\/professional\/supraventricular-tachycardia-2\/#primaryimage"},"thumbnailUrl":"","datePublished":"2010-01-23T12:36:29+00:00","dateModified":"2023-11-13T15:07:00+00:00","description":"Supraventricular tachycardia (SVT) is identified as a narrow QRS tachycardia, often with barely discernible P waves.","breadcrumb":{"@id":"https:\/\/johnsonfrancis.org\/professional\/supraventricular-tachycardia-2\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/johnsonfrancis.org\/professional\/supraventricular-tachycardia-2\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/johnsonfrancis.org\/professional\/supraventricular-tachycardia-2\/#primaryimage","url":"","contentUrl":""},{"@type":"BreadcrumbList","@id":"https:\/\/johnsonfrancis.org\/professional\/supraventricular-tachycardia-2\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/johnsonfrancis.org\/professional\/"},{"@type":"ListItem","position":2,"name":"Supraventricular tachycardia"}]},{"@type":"WebSite","@id":"https:\/\/johnsonfrancis.org\/professional\/#website","url":"https:\/\/johnsonfrancis.org\/professional\/","name":"All About Cardiovascular System and Disorders","description":"","publisher":{"@id":"https:\/\/johnsonfrancis.org\/professional\/#\/schema\/person\/5441d907049b914770f4bd98fb57feec"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/johnsonfrancis.org\/professional\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":["Person","Organization"],"@id":"https:\/\/johnsonfrancis.org\/professional\/#\/schema\/person\/5441d907049b914770f4bd98fb57feec","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"},"logo":{"@id":"https:\/\/secure.gravatar.com\/avatar\/80861b82c3f559be9e413245c5643b6c483c93495507facfe32cf96ccd8bcffd?s=96&d=mm&r=g"},"description":"Former Professor of Cardiology, Calicut Govt. Medical Kozhikode, Kerala, India. Editor-in-Chief, BMH Medical Journal","url":"https:\/\/johnsonfrancis.org\/professional\/author\/jf\/"}]}},"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/johnsonfrancis.org\/professional\/wp-json\/wp\/v2\/posts\/9941","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/johnsonfrancis.org\/professional\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/johnsonfrancis.org\/professional\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/johnsonfrancis.org\/professional\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/johnsonfrancis.org\/professional\/wp-json\/wp\/v2\/comments?post=9941"}],"version-history":[{"count":3,"href":"https:\/\/johnsonfrancis.org\/professional\/wp-json\/wp\/v2\/posts\/9941\/revisions"}],"predecessor-version":[{"id":61370,"href":"https:\/\/johnsonfrancis.org\/professional\/wp-json\/wp\/v2\/posts\/9941\/revisions\/61370"}],"wp:attachment":[{"href":"https:\/\/johnsonfrancis.org\/professional\/wp-json\/wp\/v2\/media?parent=9941"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/johnsonfrancis.org\/professional\/wp-json\/wp\/v2\/categories?post=9941"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/johnsonfrancis.org\/professional\/wp-json\/wp\/v2\/tags?post=9941"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}