{"id":10778,"date":"2026-06-28T09:44:54","date_gmt":"2026-06-28T09:44:54","guid":{"rendered":"https:\/\/cardiocases.com\/?post_type=ecg_case&#038;p=10778"},"modified":"2026-07-02T11:46:23","modified_gmt":"2026-07-02T11:46:23","slug":"trace-1-9-complete-av-block","status":"publish","type":"ecg_case","link":"https:\/\/cardiocases.com\/fr\/ecg_case\/trace-1-9-complete-av-block\/","title":{"rendered":"Trace 1.9: Complete AV-block"},"content":{"rendered":"","protected":false},"featured_media":9517,"template":"","ecg_case_type":[250],"language_ecgcase":[258],"class_list":["post-10778","ecg_case","type-ecg_case","status-publish","has-post-thumbnail","hentry","ecg_case_type-atrioventricular-block","language_ecgcase-english"],"acf":{"ecg_case_title":"Trace 1.9: Complete AV-block","patient_description":"83-year-old man with severe aortic stenosis awaiting cardiac surgery; hospitalization for Adams-Stokes syncope;","quiz_question":"Which answer(s) is(are) true?","quiz_answer_1":"the ECG shows a Mobitz 2 second-degree AV block","quiz_answer_2":"the ECG shows a 2:1 AV block","quiz_answer_3":"the ECG shows a third-degree AV block","quiz_answer_4":"the ECG shows a reflex sinus tachycardia","quiz_answer_5":"the ECG shows a junctional escape rhythm","correct_answer":["C","D","E"],"ecg_image":9517,"ecg_description":"Third-degree AV block pattern: sinus tachycardia (105 beats\/minute) with ventricular bradycardia (40 beats\/minute); atrioventricular dissociation; probable junctional escape rhythm with right bundle branch block and left anterior fascicular block;","ecg_info_box":"The diagnosis of complete AV block is defined by the complete interruption of atrioventricular conduction following a conduction block located at the level of the junction, the bundle of His or its branches. The rate and duration of the QRS vary according to the site of the escape rhythm. There is often a reflex sinus tachycardia.","commentary_ecg":"The diagnosis of complete atrioventricular block is defined by the complete interruption of atrioventricular conduction and is based on the presence of an atrioventricular dissociation, the atria and the ventricles being under the control of independent pacemakers, with a ventricular rate slower than the atrial rate. There is no relationship between P waves and QRS complexes, PR intervals are variable without any repetitive sequence.\r\n\r\nThe rate of ventricular escape rhythm is generally regular and not, or minimally, influenced by exercise or vagal maneuvers. The rate and duration of the QRS complexes vary according to the site of the escape rhythm:\r\n\r\n\u2022 Junctional escape rhythm: the origin of the escape being located high above the bifurcation of the bundle of His, the duration of QRS complexes is normal (less than 100 ms) unless there is a preexisting branch block (as in this patient); ventricular rate is generally moderately slowed (between 40 and 50 beats per minute);\r\n\u2022 Escape rhythm originating in the bundle of His or of in one of the branches: the origin of the escape being located either at the level of the bundle of His or below the bifurcation on one of the branches, the QRS may be narrow (His escape rhythm) or broad with a bundle branch block pattern (His + bundle branch block or bundle branch escape rhythm); ventricular rate is generally slowed (between 30 and 40 beats per minute);\r\n\u2022 Ventricular escape rhythm: the origin of the escape being located low and corresponding to an idioventricular focus, the duration of the QRS complexes is very broad (between 140 and 200 ms) does not meet bundle branch block criteria; ventricular rate is very slow (sometimes less than 20 beats per minute).\r\n\u2022 Atrial rhythm is most often sinus even if atrial fibrillation or atrial flutter can be observed. The sinus rhythm is frequently accelerated, a physiological reaction of the sinus node to the decreased output caused by the ventricular bradycardia. \r\n\r\n","ecg_info_post_answer":"<img class=\"alignnone wp-image-10794 size-large\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/06\/trace-1-9-ecg-en-1024x576.jpg\" alt=\"\" width=\"800\" height=\"450\" \/>"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Trace 1.9: Complete AV-block - Cardiocases<\/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:\/\/cardiocases.com\/fr\/ecg_case\/trace-1-9-complete-av-block\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Trace 1.9: Complete AV-block - Cardiocases\" \/>\n<meta property=\"og:url\" content=\"https:\/\/cardiocases.com\/fr\/ecg_case\/trace-1-9-complete-av-block\/\" \/>\n<meta property=\"og:site_name\" content=\"Cardiocases\" \/>\n<meta property=\"article:modified_time\" content=\"2026-07-02T11:46:23+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/03\/trace-1-9-ecg.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1423\" \/>\n\t<meta property=\"og:image:height\" content=\"1610\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/cardiocases.com\\\/ecg_case\\\/trace-1-9-complete-av-block\\\/\",\"url\":\"https:\\\/\\\/cardiocases.com\\\/ecg_case\\\/trace-1-9-complete-av-block\\\/\",\"name\":\"Trace 1.9: Complete AV-block - Cardiocases\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/cardiocases.com\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/cardiocases.com\\\/ecg_case\\\/trace-1-9-complete-av-block\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/cardiocases.com\\\/ecg_case\\\/trace-1-9-complete-av-block\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/cardiocases.com\\\/wp-content\\\/uploads\\\/2026\\\/03\\\/trace-1-9-ecg.png\",\"datePublished\":\"2026-06-28T09:44:54+00:00\",\"dateModified\":\"2026-07-02T11:46:23+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/cardiocases.com\\\/ecg_case\\\/trace-1-9-complete-av-block\\\/#breadcrumb\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/cardiocases.com\\\/ecg_case\\\/trace-1-9-complete-av-block\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\\\/\\\/cardiocases.com\\\/ecg_case\\\/trace-1-9-complete-av-block\\\/#primaryimage\",\"url\":\"https:\\\/\\\/cardiocases.com\\\/wp-content\\\/uploads\\\/2026\\\/03\\\/trace-1-9-ecg.png\",\"contentUrl\":\"https:\\\/\\\/cardiocases.com\\\/wp-content\\\/uploads\\\/2026\\\/03\\\/trace-1-9-ecg.png\",\"width\":1423,\"height\":1610},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/cardiocases.com\\\/ecg_case\\\/trace-1-9-complete-av-block\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/cardiocases.com\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Trace 1.9: Complete AV-block\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/cardiocases.com\\\/#website\",\"url\":\"https:\\\/\\\/cardiocases.com\\\/\",\"name\":\"Cardiocases\",\"description\":\"Real cardiac device traces, pacemaker &amp; 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