{"id":29093,"date":"2019-03-19T00:25:58","date_gmt":"2019-03-19T00:25:58","guid":{"rendered":"https:\/\/johnsonfrancis.org\/professional\/?p=29093"},"modified":"2019-03-19T00:25:58","modified_gmt":"2019-03-19T00:25:58","slug":"ecg-quiz-50-discussion","status":"publish","type":"post","link":"https:\/\/johnsonfrancis.org\/professional\/ecg-quiz-50-discussion\/","title":{"rendered":"ECG Quiz 50 &#8211; Discussion"},"content":{"rendered":"<h1><span style=\"color: #008000;\">ECG Quiz 50 &#8211; Discussion<\/span><\/h1>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-29094\" src=\"https:\/\/johnsonfrancis.org\/professional\/wp-content\/uploads\/2019\/03\/ECG-2.jpg\" alt=\"\" width=\"1901\" height=\"909\"><\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/johnsonfrancis.org\/professional\/wp-content\/uploads\/2019\/03\/ECG-2.jpg\">Click here for a larger image<\/a><\/p>\n<p>Supraventricular ectopic beat is visible as narrow QRS complex without a preceding P wave (<span style=\"color: #0000ff;\">red arrow<\/span>). PR interval of the sinus beats are at the upper limit of normal (200 ms). QR pattern (<span style=\"color: #0000ff;\">blue arrow<\/span>) is seen in anterior leads, indicating old anterior wall infarction with right bundle branch block (QRBBB). This along with left anterior hemiblock (rS pattern in inferior leads) makes it an old anterior wall infarction with almost a trifascicular block.<\/p>\n<p><span style=\"color: #0000ff;\">50 Hz line voltage inference artefacts<\/span> are seen as regular sine wave pattern of the baseline, especially in leads I, II, aVR and the anterior leads. To avoid such artefacts, meticulous attention has to be taken to reduce line voltage interference. Common sources are the ECG monitoring electrodes and the electrical connection of an electronically movable ICU cot. These electrical connections should be removed from their line output sockets. Good earthing of the electrical line is also useful. Switching on the 50 Hz notch filter in the ECG machine (line voltage filter) is also useful to some extent.<\/p>\n<p><a href=\"https:\/\/johnsonfrancis.org\/professional\/ecg-quiz-50\/\"><strong>Back to ECG Quiz 50<\/strong><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>ECG Quiz 50 &#8211; Discussion Click here for a larger image Supraventricular ectopic beat is visible as narrow QRS complex without a preceding P wave (red arrow). PR interval of the sinus beats are at the upper limit of normal (200 ms). QR pattern (blue arrow) is seen in anterior leads, indicating old anterior wall [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":29094,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"nf_dc_page":"","footnotes":""},"categories":[6,7],"tags":[],"class_list":["post-29093","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ecg-electrophysiology","category-ecg-library"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>ECG Quiz 50 - Discussion - All About Cardiovascular System and Disorders<\/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\/professional\/ecg-quiz-50-discussion\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"ECG Quiz 50 - Discussion - All About Cardiovascular System and Disorders\" \/>\n<meta property=\"og:description\" content=\"ECG Quiz 50 &#8211; Discussion Click here for a larger image Supraventricular ectopic beat is visible as narrow QRS complex without a preceding P wave (red arrow). PR interval of the sinus beats are at the upper limit of normal (200 ms). QR pattern (blue arrow) is seen in anterior leads, indicating old anterior wall [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/johnsonfrancis.org\/professional\/ecg-quiz-50-discussion\/\" \/>\n<meta property=\"og:site_name\" content=\"All About Cardiovascular System and Disorders\" \/>\n<meta property=\"article:published_time\" content=\"2019-03-19T00:25:58+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\\\/professional\\\/ecg-quiz-50-discussion\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/ecg-quiz-50-discussion\\\/\"},\"author\":{\"name\":\"Johnson Francis\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/#\\\/schema\\\/person\\\/5441d907049b914770f4bd98fb57feec\"},\"headline\":\"ECG Quiz 50 &#8211; Discussion\",\"datePublished\":\"2019-03-19T00:25:58+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/ecg-quiz-50-discussion\\\/\"},\"wordCount\":187,\"publisher\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/#\\\/schema\\\/person\\\/5441d907049b914770f4bd98fb57feec\"},\"image\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/ecg-quiz-50-discussion\\\/#primaryimage\"},\"thumbnailUrl\":\"\",\"articleSection\":[\"ECG \\\/ Electrophysiology\",\"ECG Library\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/ecg-quiz-50-discussion\\\/\",\"url\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/ecg-quiz-50-discussion\\\/\",\"name\":\"ECG Quiz 50 - Discussion - All About Cardiovascular System and Disorders\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/ecg-quiz-50-discussion\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/ecg-quiz-50-discussion\\\/#primaryimage\"},\"thumbnailUrl\":\"\",\"datePublished\":\"2019-03-19T00:25:58+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/ecg-quiz-50-discussion\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/ecg-quiz-50-discussion\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/ecg-quiz-50-discussion\\\/#primaryimage\",\"url\":\"\",\"contentUrl\":\"\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/ecg-quiz-50-discussion\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"ECG Quiz 50 &#8211; Discussion\"}]},{\"@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":"ECG Quiz 50 - Discussion - All About Cardiovascular System and Disorders","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\/ecg-quiz-50-discussion\/","og_locale":"en_US","og_type":"article","og_title":"ECG Quiz 50 - Discussion - All About Cardiovascular System and Disorders","og_description":"ECG Quiz 50 &#8211; Discussion Click here for a larger image Supraventricular ectopic beat is visible as narrow QRS complex without a preceding P wave (red arrow). PR interval of the sinus beats are at the upper limit of normal (200 ms). QR pattern (blue arrow) is seen in anterior leads, indicating old anterior wall [&hellip;]","og_url":"https:\/\/johnsonfrancis.org\/professional\/ecg-quiz-50-discussion\/","og_site_name":"All About Cardiovascular System and Disorders","article_published_time":"2019-03-19T00:25:58+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\/professional\/ecg-quiz-50-discussion\/#article","isPartOf":{"@id":"https:\/\/johnsonfrancis.org\/professional\/ecg-quiz-50-discussion\/"},"author":{"name":"Johnson Francis","@id":"https:\/\/johnsonfrancis.org\/professional\/#\/schema\/person\/5441d907049b914770f4bd98fb57feec"},"headline":"ECG Quiz 50 &#8211; Discussion","datePublished":"2019-03-19T00:25:58+00:00","mainEntityOfPage":{"@id":"https:\/\/johnsonfrancis.org\/professional\/ecg-quiz-50-discussion\/"},"wordCount":187,"publisher":{"@id":"https:\/\/johnsonfrancis.org\/professional\/#\/schema\/person\/5441d907049b914770f4bd98fb57feec"},"image":{"@id":"https:\/\/johnsonfrancis.org\/professional\/ecg-quiz-50-discussion\/#primaryimage"},"thumbnailUrl":"","articleSection":["ECG \/ Electrophysiology","ECG Library"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/johnsonfrancis.org\/professional\/ecg-quiz-50-discussion\/","url":"https:\/\/johnsonfrancis.org\/professional\/ecg-quiz-50-discussion\/","name":"ECG Quiz 50 - Discussion - All About Cardiovascular System and Disorders","isPartOf":{"@id":"https:\/\/johnsonfrancis.org\/professional\/#website"},"primaryImageOfPage":{"@id":"https:\/\/johnsonfrancis.org\/professional\/ecg-quiz-50-discussion\/#primaryimage"},"image":{"@id":"https:\/\/johnsonfrancis.org\/professional\/ecg-quiz-50-discussion\/#primaryimage"},"thumbnailUrl":"","datePublished":"2019-03-19T00:25:58+00:00","breadcrumb":{"@id":"https:\/\/johnsonfrancis.org\/professional\/ecg-quiz-50-discussion\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/johnsonfrancis.org\/professional\/ecg-quiz-50-discussion\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/johnsonfrancis.org\/professional\/ecg-quiz-50-discussion\/#primaryimage","url":"","contentUrl":""},{"@type":"BreadcrumbList","@id":"https:\/\/johnsonfrancis.org\/professional\/ecg-quiz-50-discussion\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/johnsonfrancis.org\/professional\/"},{"@type":"ListItem","position":2,"name":"ECG Quiz 50 &#8211; Discussion"}]},{"@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\/29093","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=29093"}],"version-history":[{"count":0,"href":"https:\/\/johnsonfrancis.org\/professional\/wp-json\/wp\/v2\/posts\/29093\/revisions"}],"wp:attachment":[{"href":"https:\/\/johnsonfrancis.org\/professional\/wp-json\/wp\/v2\/media?parent=29093"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/johnsonfrancis.org\/professional\/wp-json\/wp\/v2\/categories?post=29093"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/johnsonfrancis.org\/professional\/wp-json\/wp\/v2\/tags?post=29093"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}