{"id":3792,"date":"2010-02-18T08:58:44","date_gmt":"2010-02-18T08:58:44","guid":{"rendered":"http:\/\/cardiophile.org\/?p=3792"},"modified":"2010-02-18T08:58:44","modified_gmt":"2010-02-18T08:58:44","slug":"vpc-couplet","status":"publish","type":"post","link":"https:\/\/johnsonfrancis.org\/professional\/vpc-couplet\/","title":{"rendered":"VPC couplet"},"content":{"rendered":"<h2><span style=\"color: #008000;\">VPC couplet<\/span><\/h2>\n<p><iframe loading=\"lazy\" width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/gA2zgrFnMyg\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen=\"\"><\/iframe><\/p>\n<figure id=\"attachment_37145\" aria-describedby=\"caption-attachment-37145\" style=\"width: 1200px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-37145\" src=\"https:\/\/johnsonfrancis.org\/professional\/wp-content\/uploads\/2010\/02\/VPC-couplet.png\" alt=\"VPC couplet\" width=\"1200\" height=\"694\"><figcaption id=\"caption-attachment-37145\" class=\"wp-caption-text\">VPC couplet<\/figcaption><\/figure>\n<p>Ventricular premature complexes (VPC) seen as wide bizarre QRS complexes not preceded by a P wave. Initial two VPCs are isolated while the last two occur in rapid sequence as a couplet. VPC couplets may be a forerunner of ventricular tachycardia. Isolated VPCs and the couplet are followed by a compensatory pause. All the VPCs have same morphology (monomorphic) indicating the same focus of origin (unifocal). Unifocal VPCs usually have the same coupling interval. Coupling interval is the interval from the onset of the preceding sinus beat to the onset of the ectopic beat. Unifocal VPCs from a parasystolic focus can have varying coupling interval. Parasystolic focus is a protected focus with entrance block. It captures the ventricle whenever it finds that the ventricle is not refractory from a conducted beat. The inter ectopic intervals in a parasystole have a common denominator.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>ECG showing VPC couplet.<\/p>\n","protected":false},"author":1,"featured_media":37145,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"nf_dc_page":"","footnotes":""},"categories":[6,7],"tags":[3175,4168,4208],"class_list":["post-3792","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ecg-electrophysiology","category-ecg-library","tag-pvc-couplet","tag-ventricular-premature-complexes-vpcs-in-couplet","tag-vpc-couplet"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>VPC couplet<\/title>\n<meta name=\"description\" content=\"ECG showing VPC couplet.\" \/>\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\/vpc-couplet\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"VPC couplet\" \/>\n<meta property=\"og:description\" content=\"ECG showing VPC couplet.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/johnsonfrancis.org\/professional\/vpc-couplet\/\" \/>\n<meta property=\"og:site_name\" content=\"All About Cardiovascular System and Disorders\" \/>\n<meta property=\"article:published_time\" content=\"2010-02-18T08:58:44+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\\\/vpc-couplet\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/vpc-couplet\\\/\"},\"author\":{\"name\":\"Johnson Francis\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/#\\\/schema\\\/person\\\/5441d907049b914770f4bd98fb57feec\"},\"headline\":\"VPC couplet\",\"datePublished\":\"2010-02-18T08:58:44+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/vpc-couplet\\\/\"},\"wordCount\":155,\"publisher\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/#\\\/schema\\\/person\\\/5441d907049b914770f4bd98fb57feec\"},\"image\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/vpc-couplet\\\/#primaryimage\"},\"thumbnailUrl\":\"\",\"keywords\":[\"PVC Couplet\",\"Ventricular premature complexes (VPCs) in couplet\",\"VPC couplet\"],\"articleSection\":[\"ECG \\\/ Electrophysiology\",\"ECG Library\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/vpc-couplet\\\/\",\"url\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/vpc-couplet\\\/\",\"name\":\"VPC couplet\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/vpc-couplet\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/vpc-couplet\\\/#primaryimage\"},\"thumbnailUrl\":\"\",\"datePublished\":\"2010-02-18T08:58:44+00:00\",\"description\":\"ECG showing VPC couplet.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/vpc-couplet\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/vpc-couplet\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/vpc-couplet\\\/#primaryimage\",\"url\":\"\",\"contentUrl\":\"\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/vpc-couplet\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"VPC couplet\"}]},{\"@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":"VPC couplet","description":"ECG showing VPC couplet.","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\/vpc-couplet\/","og_locale":"en_US","og_type":"article","og_title":"VPC couplet","og_description":"ECG showing VPC couplet.","og_url":"https:\/\/johnsonfrancis.org\/professional\/vpc-couplet\/","og_site_name":"All About Cardiovascular System and Disorders","article_published_time":"2010-02-18T08:58:44+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\/vpc-couplet\/#article","isPartOf":{"@id":"https:\/\/johnsonfrancis.org\/professional\/vpc-couplet\/"},"author":{"name":"Johnson Francis","@id":"https:\/\/johnsonfrancis.org\/professional\/#\/schema\/person\/5441d907049b914770f4bd98fb57feec"},"headline":"VPC couplet","datePublished":"2010-02-18T08:58:44+00:00","mainEntityOfPage":{"@id":"https:\/\/johnsonfrancis.org\/professional\/vpc-couplet\/"},"wordCount":155,"publisher":{"@id":"https:\/\/johnsonfrancis.org\/professional\/#\/schema\/person\/5441d907049b914770f4bd98fb57feec"},"image":{"@id":"https:\/\/johnsonfrancis.org\/professional\/vpc-couplet\/#primaryimage"},"thumbnailUrl":"","keywords":["PVC Couplet","Ventricular premature complexes (VPCs) in couplet","VPC couplet"],"articleSection":["ECG \/ Electrophysiology","ECG Library"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/johnsonfrancis.org\/professional\/vpc-couplet\/","url":"https:\/\/johnsonfrancis.org\/professional\/vpc-couplet\/","name":"VPC couplet","isPartOf":{"@id":"https:\/\/johnsonfrancis.org\/professional\/#website"},"primaryImageOfPage":{"@id":"https:\/\/johnsonfrancis.org\/professional\/vpc-couplet\/#primaryimage"},"image":{"@id":"https:\/\/johnsonfrancis.org\/professional\/vpc-couplet\/#primaryimage"},"thumbnailUrl":"","datePublished":"2010-02-18T08:58:44+00:00","description":"ECG showing VPC couplet.","breadcrumb":{"@id":"https:\/\/johnsonfrancis.org\/professional\/vpc-couplet\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/johnsonfrancis.org\/professional\/vpc-couplet\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/johnsonfrancis.org\/professional\/vpc-couplet\/#primaryimage","url":"","contentUrl":""},{"@type":"BreadcrumbList","@id":"https:\/\/johnsonfrancis.org\/professional\/vpc-couplet\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/johnsonfrancis.org\/professional\/"},{"@type":"ListItem","position":2,"name":"VPC couplet"}]},{"@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\/3792","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=3792"}],"version-history":[{"count":0,"href":"https:\/\/johnsonfrancis.org\/professional\/wp-json\/wp\/v2\/posts\/3792\/revisions"}],"wp:attachment":[{"href":"https:\/\/johnsonfrancis.org\/professional\/wp-json\/wp\/v2\/media?parent=3792"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/johnsonfrancis.org\/professional\/wp-json\/wp\/v2\/categories?post=3792"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/johnsonfrancis.org\/professional\/wp-json\/wp\/v2\/tags?post=3792"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}