{"id":10149,"date":"2026-04-02T19:33:16","date_gmt":"2026-04-02T19:33:16","guid":{"rendered":"https:\/\/cardiocases.com\/?post_type=ecg_case&#038;p=10149"},"modified":"2026-04-02T19:33:17","modified_gmt":"2026-04-02T19:33:17","slug":"trace-5-3-extrasystoles-atriales-bloquees","status":"publish","type":"ecg_case","link":"https:\/\/cardiocases.com\/fr\/ecg_case\/trace-5-3-extrasystoles-atriales-bloquees\/","title":{"rendered":"Trac\u00e9 5.3: Extrasystoles atriales bloqu\u00e9es"},"content":{"rendered":"","protected":false},"featured_media":10148,"template":"","ecg_case_type":[254],"language_ecgcase":[259],"class_list":["post-10149","ecg_case","type-ecg_case","status-publish","has-post-thumbnail","hentry","ecg_case_type-extrasystoles","language_ecgcase-french"],"acf":{"ecg_case_title":"Trac\u00e9 5.3: Extrasystoles atriales bloqu\u00e9es","patient_description":"Homme de 75 ans pr\u00e9sentant des \u00e9pisodes de FA paroxystique; adress\u00e9 pour diagnostic de bradycardie (prise de pouls par son m\u00e9decin traitant) et discussion pour implantation \u00e9ven\u00ad tuelle d\u2019un stimulateur cardiaque","quiz_question":"Sur cet ECG, on retrouve:","quiz_answer_1":"une dysfonction sinusale","quiz_answer_2":"des extrasystoles atriales bloqu\u00e9es","quiz_answer_3":"un big\u00e9minisme atrial","quiz_answer_4":"un trig\u00e9minisme atrial","quiz_answer_5":"une hypertrophie atriale gauche","correct_answer":["B","D","E"],"ecg_image":10148,"ecg_description":"Cet ECG montre une bradycardie; on retrouve une activit\u00e9 sinusale avec hypertrophie auriculaire gauche (onde P large > 120 ms, bifide en V5, V6 et composante n\u00e9gative \u00e9largie > 40 ms en V1); succession entre 2 battements sinusaux puis une extrasystole atriale pr\u00e9coce (extrasystole atriale dans l\u2019onde T avec modification nette de l\u2019aspect de cette onde T); il s\u2019agit donc d\u2019un trig\u00e9minisme atrial; les extrasystoles atriales sont tr\u00e8s pr\u00e9coces et sont bloqu\u00e9es (non conduites au ventricule) expliquant la bradycardie diagnostiqu\u00e9e au pouls;","ecg_info_box":"Les extrasystoles atriales peuvent \u00eatre isol\u00e9es, en paires ou en salves avec un couplage fixe ou variable. Un big\u00e9minisme atrial correspond \u00e0 l\u2019alternance entre un complexe d\u2019origine sinusale et une extrasystole atriale. On parle de trig\u00e9minisme quand, de fa\u00e7on r\u00e9p\u00e9titive, une extrasystole atriale survient apr\u00e8s 2 complexes d\u2019origine sinusale.","commentary_ecg":"Ce patient pr\u00e9sentait des extrasystoles atriales bloqu\u00e9es entrainant une bradycardie diagnostiqu\u00e9e par la prise de pouls. Il s\u2019agit donc d\u2019un trouble de l\u2019excitabilit\u00e9 et non d\u2019un trouble de conduction. Il n\u2019existe pas chez ce patient de dysfonction sinusale et l\u2019indication d\u2019implantation d\u2019un stimulateur cardiaque ne doit pas \u00eatre retenue. En effet, le ralentissement de fr\u00e9quence est en rapport avec la pause sinusale physiologique suivant l\u2019extrasystole, le traitement \u00e0 proposer \u00e9tant \u00e9ventuellement l\u2019introduction d\u2019un antiarythmique. Ce trac\u00e9 montre que devant tout trac\u00e9 \u00e9vocateur de dysfonction sinusale, une analyse minutieuse du trac\u00e9 est n\u00e9cessaire, avec une attention particuli\u00e8re pour la morphologie de l\u2019onde T et de ses variations, afin d\u2019\u00e9liminer le diagnostic diff\u00e9rentiel repr\u00e9sent\u00e9 par l\u2019existence d\u2019extrasystoles atriales bloqu\u00e9es.\r\n\r\nLe couplage de l\u2019extrasystole est fixe avec une alternance entre 2 activit\u00e9s sinusales et une extrasystole. Il s\u2019agit donc d\u2019un trig\u00e9minisme.","ecg_info_post_answer":"<img class=\"alignnone wp-image-10317 size-large\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/04\/page-215-1024x612.png\" alt=\"\" width=\"800\" height=\"478\" \/>"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Trac\u00e9 5.3: Extrasystoles atriales bloqu\u00e9es - 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-5-3-extrasystoles-atriales-bloquees\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Trac\u00e9 5.3: Extrasystoles atriales bloqu\u00e9es - Cardiocases\" \/>\n<meta property=\"og:url\" content=\"https:\/\/cardiocases.com\/fr\/ecg_case\/trace-5-3-extrasystoles-atriales-bloquees\/\" \/>\n<meta property=\"og:site_name\" content=\"Cardiocases\" \/>\n<meta property=\"article:modified_time\" content=\"2026-04-02T19:33:17+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/cardiocases.com\/ecg_case\/trace-5-3-extrasystoles-atriales-bloquees\/\",\"url\":\"https:\/\/cardiocases.com\/ecg_case\/trace-5-3-extrasystoles-atriales-bloquees\/\",\"name\":\"Trac\u00e9 5.3: Extrasystoles atriales bloqu\u00e9es - Cardiocases\",\"isPartOf\":{\"@id\":\"https:\/\/cardiocases.com\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/cardiocases.com\/ecg_case\/trace-5-3-extrasystoles-atriales-bloquees\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/cardiocases.com\/ecg_case\/trace-5-3-extrasystoles-atriales-bloquees\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/03\/trace-5-3-ecg-2.jpeg\",\"datePublished\":\"2026-04-02T19:33:16+00:00\",\"dateModified\":\"2026-04-02T19:33:17+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/cardiocases.com\/ecg_case\/trace-5-3-extrasystoles-atriales-bloquees\/#breadcrumb\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/cardiocases.com\/ecg_case\/trace-5-3-extrasystoles-atriales-bloquees\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/cardiocases.com\/ecg_case\/trace-5-3-extrasystoles-atriales-bloquees\/#primaryimage\",\"url\":\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/03\/trace-5-3-ecg-2.jpeg\",\"contentUrl\":\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/03\/trace-5-3-ecg-2.jpeg\",\"width\":1024,\"height\":608},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/cardiocases.com\/ecg_case\/trace-5-3-extrasystoles-atriales-bloquees\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/cardiocases.com\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Trac\u00e9 5.3: Extrasystoles atriales bloqu\u00e9es\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/cardiocases.com\/#website\",\"url\":\"https:\/\/cardiocases.com\/\",\"name\":\"Cardiocases\",\"description\":\"Real cardiac device traces, pacemaker &amp; 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