{"id":10067,"date":"2026-04-01T11:18:08","date_gmt":"2026-04-01T11:18:08","guid":{"rendered":"https:\/\/cardiocases.com\/?post_type=ecg_case&#038;p=10067"},"modified":"2026-04-09T07:33:23","modified_gmt":"2026-04-09T07:33:23","slug":"trace-1-12-bloc-auriculo-ventriculaire-complet-sur-infarctus-du-myocarde","status":"publish","type":"ecg_case","link":"https:\/\/cardiocases.com\/fr\/ecg_case\/trace-1-12-bloc-auriculo-ventriculaire-complet-sur-infarctus-du-myocarde\/","title":{"rendered":"Trac\u00e9 1.12: Bloc auriculo-ventriculaire complet sur infarctus du myocarde"},"content":{"rendered":"","protected":false},"featured_media":10066,"template":"","ecg_case_type":[250],"language_ecgcase":[259],"class_list":["post-10067","ecg_case","type-ecg_case","status-publish","has-post-thumbnail","hentry","ecg_case_type-atrioventricular-block","language_ecgcase-french"],"acf":{"ecg_case_title":"Trac\u00e9 1.12: Bloc auriculo-ventriculaire complet sur infarctus du myocarde","patient_description":"Homme de 63 ans avec nombreux facteurs de risque (tabac, HTA, DNID), douleur thoracique en barre depuis 1 heure; appel SAMU; ECG enregistr\u00e9 \u00e0 l\u2019arriv\u00e9e aux urgences","quiz_question":"Concernant cet ECG, quelle(s) est(sont) la(les) r\u00e9ponse(s) vraie(s)?","quiz_answer_1":"rythme sinusal","quiz_answer_2":"FA","quiz_answer_3":"BAV 3","quiz_answer_4":"BAV premier degr\u00e9","quiz_answer_5":"sus-ST territoire inf\u00e9rieur","correct_answer":["A","E"],"ecg_image":10066,"ecg_description":"Rythme sinusal avec sus-d\u00e9calage du segment ST dans le territoire inf\u00e9rieur;","ecg_info_box":"En fonction du si\u00e8ge de l\u2019infarctus (ant\u00e9rieur ou inf\u00e9rieur\/post\u00e9rieur), les caract\u00e9ristiques morphologiques \u00e9volutives et anatomiques du BAV s\u2019opposent. Le pronostic est souvent tr\u00e8s alt\u00e9r\u00e9 dans le cadre de la survenue d\u2019un BAV post-infarctus ant\u00e9rieur, la mortalit\u00e9 \u00e9tant tr\u00e8s \u00e9lev\u00e9e. A l\u2019oppos\u00e9, le trouble de conduction est le plus souvent spontan\u00e9ment r\u00e9solutif en quelques jours dans le cadre d\u2019un infarctus inf\u00e9rieur. Les indications d\u2019implantation d\u00e9finitive d\u2019un stimulateur cardiaque sont donc tr\u00e8s rares.","commentary_ecg":"-","ecg_info_post_answer":"&nbsp;\r\n\r\n&nbsp;\r\n\r\nSecond trac\u00e9 obtenu quelques minutes plus tard...\r\n\r\n<img class=\"alignnone wp-image-10678 size-large\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/04\/trace-1-12-ecg2-1-1024x662.png\" alt=\"\" width=\"800\" height=\"517\" \/>\r\n\r\n<strong>Description trac\u00e9<\/strong>\r\n\r\nDissociation auriculo-ventriculaire avec persistance du sus-d\u00e9calage du segment ST; BAV complet sur infarctus inf\u00e9rieur;\r\n\r\n&nbsp;\r\n\r\n<strong>Commentaires<\/strong>\r\nL\u2019incidence du BAV complet dans le cadre d\u2019un infarctus aigu a consid\u00e9rablement diminu\u00e9 depuis l\u2019utilisation des techniques de reperfusion (thrombolyse ou angioplastie en urgence) mais reste encore aujourd\u2019hui non n\u00e9gligeable (de l\u2019ordre 3 \u00e0 5%). En fonction du si\u00e8ge de l\u2019infarctus (ant\u00e9rieur ou inf\u00e9rieur\/post\u00e9rieur), les caract\u00e9ristiques morphologiques \u00e9volutives et anatomiques du bloc s\u2019opposent.\r\n\r\nPour l\u2019infarctus inf\u00e9rieur\/post\u00e9rieur, le si\u00e8ge du bloc est g\u00e9n\u00e9ralement situ\u00e9 au niveau du n\u0153ud auriculo-ventriculaire, la fr\u00e9quence ventriculaire reste relativement rapide (entre 40 et 60 battements\/minute), les complexes QRS sont fins. Le trouble de conduction est le plus souvent spontan\u00e9ment r\u00e9gressif en quelques jours, les l\u00e9sions des voies de conduction \u00e9tant r\u00e9versibles (inflammatoires et\/ou \u0153d\u00e9mateuses).\r\n\r\nPour l\u2019infarctus ant\u00e9rieur, le m\u00e9canisme du bloc est le plus souvent une n\u00e9crose non r\u00e9versible des 2 branches du faisceau de His. Les QRS sont larges, la fr\u00e9quence d\u2019\u00e9chappement est lente (inf\u00e9rieure \u00e0 40 battements\/minute) et souvent instable. La mortalit\u00e9 est \u00e9lev\u00e9e (&gt; 70%) par d\u00e9faillance cardiaque, le bloc \u00e9tant le t\u00e9moin d\u2019une n\u00e9crose \u00e9tendue. L\u2019aspect de BAV complet peut \u00eatre pr\u00e9c\u00e9d\u00e9 d\u2019un bloc de branche, d\u2019un bloc bifasciculaire ou d\u2019un BAV du deuxi\u00e8me degr\u00e9 type 2.\r\n\r\nIl existe un sous-chapitre dans les nouvelles recommandations europ\u00e9ennes portant sur le BAV dans le post-infarctus. Il n\u2019y a pas d\u2019indication de stimulation d\u00e9finitive (classe III) si un BAV survenant dans les suites d\u2019un infarctus r\u00e9gresse spontan\u00e9ment. Dans les rares cas o\u00f9 le BAV complet devient permanent (savoir attendre plusieurs semaines), un stimulateur cardiaque doit \u00eatre implant\u00e9.\r\n\r\nCe patient a b\u00e9n\u00e9fici\u00e9 d\u2019une angioplastie \u00e0 H+3 du premier segment de la coronaire droite avec un bon r\u00e9sultat et de la pose d\u2019une sonde d\u2019entra\u00eenement; le trouble de conduction a r\u00e9gress\u00e9 apr\u00e8s 2 jours, la sonde a \u00e9t\u00e9 retir\u00e9e.\r\n\r\n<img class=\"alignnone wp-image-10295 size-large\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/04\/page-059-1024x686.png\" alt=\"\" width=\"800\" height=\"536\" \/>"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Trac\u00e9 1.12: Bloc auriculo-ventriculaire complet sur infarctus du myocarde - 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-1-12-bloc-auriculo-ventriculaire-complet-sur-infarctus-du-myocarde\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Trac\u00e9 1.12: Bloc auriculo-ventriculaire complet sur infarctus du myocarde - Cardiocases\" \/>\n<meta property=\"og:url\" content=\"https:\/\/cardiocases.com\/fr\/ecg_case\/trace-1-12-bloc-auriculo-ventriculaire-complet-sur-infarctus-du-myocarde\/\" \/>\n<meta property=\"og:site_name\" content=\"Cardiocases\" \/>\n<meta property=\"article:modified_time\" content=\"2026-04-09T07:33:23+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/03\/trace-1-12-ecg-4-scaled-e1775042032279.jpeg\" \/>\n\t<meta property=\"og:image:width\" content=\"2560\" \/>\n\t<meta property=\"og:image:height\" content=\"1224\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\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-1-12-bloc-auriculo-ventriculaire-complet-sur-infarctus-du-myocarde\/\",\"url\":\"https:\/\/cardiocases.com\/ecg_case\/trace-1-12-bloc-auriculo-ventriculaire-complet-sur-infarctus-du-myocarde\/\",\"name\":\"Trac\u00e9 1.12: Bloc auriculo-ventriculaire complet sur infarctus du myocarde - Cardiocases\",\"isPartOf\":{\"@id\":\"https:\/\/cardiocases.com\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/cardiocases.com\/ecg_case\/trace-1-12-bloc-auriculo-ventriculaire-complet-sur-infarctus-du-myocarde\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/cardiocases.com\/ecg_case\/trace-1-12-bloc-auriculo-ventriculaire-complet-sur-infarctus-du-myocarde\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/03\/trace-1-12-ecg-4-scaled-e1775042032279.jpeg\",\"datePublished\":\"2026-04-01T11:18:08+00:00\",\"dateModified\":\"2026-04-09T07:33:23+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/cardiocases.com\/ecg_case\/trace-1-12-bloc-auriculo-ventriculaire-complet-sur-infarctus-du-myocarde\/#breadcrumb\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/cardiocases.com\/ecg_case\/trace-1-12-bloc-auriculo-ventriculaire-complet-sur-infarctus-du-myocarde\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/cardiocases.com\/ecg_case\/trace-1-12-bloc-auriculo-ventriculaire-complet-sur-infarctus-du-myocarde\/#primaryimage\",\"url\":\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/03\/trace-1-12-ecg-4-scaled-e1775042032279.jpeg\",\"contentUrl\":\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/03\/trace-1-12-ecg-4-scaled-e1775042032279.jpeg\",\"width\":2560,\"height\":1224},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/cardiocases.com\/ecg_case\/trace-1-12-bloc-auriculo-ventriculaire-complet-sur-infarctus-du-myocarde\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/cardiocases.com\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Trac\u00e9 1.12: Bloc auriculo-ventriculaire complet sur infarctus du myocarde\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/cardiocases.com\/#website\",\"url\":\"https:\/\/cardiocases.com\/\",\"name\":\"Cardiocases\",\"description\":\"Real cardiac device traces, pacemaker &amp; 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