{"id":10051,"date":"2026-04-01T07:29:32","date_gmt":"2026-04-01T07:29:32","guid":{"rendered":"https:\/\/cardiocases.com\/?post_type=ecg_case&#038;p=10051"},"modified":"2026-04-09T07:27:23","modified_gmt":"2026-04-09T07:27:23","slug":"trace-1-5-flutter-atrial-et-trouble-de-conduction-atrio-ventriculaire","status":"publish","type":"ecg_case","link":"https:\/\/cardiocases.com\/fr\/ecg_case\/trace-1-5-flutter-atrial-et-trouble-de-conduction-atrio-ventriculaire\/","title":{"rendered":"Trac\u00e9 1.5: Flutter atrial et trouble de conduction atrio-ventriculaire"},"content":{"rendered":"","protected":false},"featured_media":10050,"template":"","ecg_case_type":[250],"language_ecgcase":[259],"class_list":["post-10051","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 1.5: Flutter atrial et trouble de conduction atrio-ventriculaire","patient_description":"Homme de 78 ans avec hypertension art\u00e9rielle; sensation de fatigue","quiz_question":"Quelle(s) est(sont) la(les) r\u00e9ponse(s) vraie(s) concernant le(s) diagnostic(s) sur cet ECG \u00e0 l\u2019entr\u00e9e dans le service de cardiologie?","quiz_answer_1":"rythme sinusal","quiz_answer_2":"hypertrophie ventriculaire droite","quiz_answer_3":"flutter atrial","quiz_answer_4":"hypertrophie auriculaire droite","quiz_answer_5":"fibrillation atriale","correct_answer":["C"],"ecg_image":10050,"ecg_description":"Ce trac\u00e9 montre une bradycardie avec une fr\u00e9quence ventriculaire \u00e0 40 bpm; aspect de flutter atrial commun (dents de scie dans les d\u00e9rivations inf\u00e9rieures, activit\u00e9 atriale positive en V1 et n\u00e9gative en V6); bloc de branche droit incomplet; les complexes QRS sont lents et r\u00e9guliers correspondant \u00e0 une conduction atrio-ventriculaire alt\u00e9r\u00e9e (absence de rapport fixe entre activit\u00e9s atriales et activit\u00e9s ventriculaires); ","ecg_info_box":"Le BAV du second degr\u00e9 type 1 correspond tr\u00e8s majoritairement \u00e0 un trouble de la conduction situ\u00e9 au niveau du noeud atrio-ventriculaire et \u00e0 une exag\u00e9ration de la conduction d\u00e9cr\u00e9mentielle. Ce si\u00e8ge explique la morphologie le plus souvent normale des complexes QRS. Une exploration \u00e9lectrophysiologique retrouve alors un allongement progressif de l\u2019intervalle AH, puis une activit\u00e9 atriale bloqu\u00e9e non suivie d\u2019un potentiel hisien (bloc supra-hisien).","commentary_ecg":"-","ecg_info_post_answer":"&nbsp;\r\n\r\n&nbsp;\r\n\r\n<img class=\"alignnone wp-image-10397 size-large\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/04\/trace-1-5-ecg2-1024x613.png\" alt=\"\" width=\"800\" height=\"479\" \/>\r\n\r\n<strong>Description trac\u00e9<\/strong>\r\n\r\nCe patient a b\u00e9n\u00e9fici\u00e9 d\u2019une ablation de l\u2019isthme cavo-tricuspide; le trac\u00e9 suivant est enregistr\u00e9 au retour de la proc\u00e9dure d\u2019ablation.\r\n\r\n&nbsp;\r\n\r\n<strong>Question<\/strong>\r\n\r\nQuels sont les diagnostics pour ce second ECG?\r\n\r\nA. bloc de branche gauche\r\n\r\nB. bloc de branche droit + h\u00e9mibloc ant\u00e9rieur gauche\r\n\r\nC. BAV 3\r\n\r\nD. BAV 2 Mobitz 2\r\n\r\nE. BAV 2 Mobitz 1\r\n\r\n&nbsp;\r\n\r\n&nbsp;\r\n\r\n&nbsp;\r\n\r\n&nbsp;\r\n\r\n&nbsp;\r\n\r\nBonnes r\u00e9ponses: E. Activit\u00e9 atriale sinusale et aspect de bloc auriculo-ventriculaire du second degr\u00e9 type Luciani-Wenckebach;\r\n\r\n&nbsp;\r\n\r\n<strong>Commentaires<\/strong>\r\n\r\nCe patient pr\u00e9sentait donc un flutter atrial et un trouble de conduction atrioventriculaire de haut grade traduit par une fr\u00e9quence ventriculaire lente et une absence de relation directe entre activit\u00e9s atriales et activit\u00e9s ventriculaires. La mise en \u00e9vidence d\u2019un bloc du second degr\u00e9 diurne apr\u00e8s le retour en rythme sinusal confirme l\u2019existence de ce trouble de conduction probablement jonctionnel (p\u00e9riodes de Luciani-Wenckebach avec incr\u00e9ment important de l\u2019intervalle PR sugg\u00e9rant un bloc nodal). Ce patient ne b\u00e9n\u00e9ficiait d\u2019aucun traitement d\u00e9primant la conduction auriculo-ventriculaire. L\u2019aspect \u00e9lectrique a \u00e9volu\u00e9 vers une majoration du trouble de conduction avec rythme atrio-ventriculaire en 2\/1 et bradycardie symptomatique \u00e0 30 battements\/minute. Il a donc b\u00e9n\u00e9fici\u00e9 de l\u2019implantation d\u2019un stimulateur double chambre.\r\n\r\n<img class=\"alignnone wp-image-10288 size-large\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/04\/page-027-1024x601.png\" alt=\"\" width=\"800\" height=\"470\" \/>"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Trac\u00e9 1.5: Flutter atrial et trouble de conduction atrio-ventriculaire - 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-1-5-flutter-atrial-et-trouble-de-conduction-atrio-ventriculaire\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Trac\u00e9 1.5: Flutter atrial et trouble de conduction atrio-ventriculaire - Cardiocases\" \/>\n<meta property=\"og:url\" content=\"https:\/\/cardiocases.com\/fr\/ecg_case\/trace-1-5-flutter-atrial-et-trouble-de-conduction-atrio-ventriculaire\/\" \/>\n<meta property=\"og:site_name\" content=\"Cardiocases\" \/>\n<meta property=\"article:modified_time\" content=\"2026-04-09T07:27:23+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/03\/trace-1-5-ecg-5-scaled-e1775658194812.jpeg\" \/>\n\t<meta property=\"og:image:width\" content=\"2372\" \/>\n\t<meta property=\"og:image:height\" content=\"1520\" \/>\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-1-5-flutter-atrial-et-trouble-de-conduction-atrio-ventriculaire\/\",\"url\":\"https:\/\/cardiocases.com\/ecg_case\/trace-1-5-flutter-atrial-et-trouble-de-conduction-atrio-ventriculaire\/\",\"name\":\"Trac\u00e9 1.5: Flutter atrial et trouble de conduction atrio-ventriculaire - Cardiocases\",\"isPartOf\":{\"@id\":\"https:\/\/cardiocases.com\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/cardiocases.com\/ecg_case\/trace-1-5-flutter-atrial-et-trouble-de-conduction-atrio-ventriculaire\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/cardiocases.com\/ecg_case\/trace-1-5-flutter-atrial-et-trouble-de-conduction-atrio-ventriculaire\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/03\/trace-1-5-ecg-5-scaled-e1775658194812.jpeg\",\"datePublished\":\"2026-04-01T07:29:32+00:00\",\"dateModified\":\"2026-04-09T07:27:23+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/cardiocases.com\/ecg_case\/trace-1-5-flutter-atrial-et-trouble-de-conduction-atrio-ventriculaire\/#breadcrumb\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/cardiocases.com\/ecg_case\/trace-1-5-flutter-atrial-et-trouble-de-conduction-atrio-ventriculaire\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/cardiocases.com\/ecg_case\/trace-1-5-flutter-atrial-et-trouble-de-conduction-atrio-ventriculaire\/#primaryimage\",\"url\":\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/03\/trace-1-5-ecg-5-scaled-e1775658194812.jpeg\",\"contentUrl\":\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/03\/trace-1-5-ecg-5-scaled-e1775658194812.jpeg\",\"width\":2372,\"height\":1520},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/cardiocases.com\/ecg_case\/trace-1-5-flutter-atrial-et-trouble-de-conduction-atrio-ventriculaire\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/cardiocases.com\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Trac\u00e9 1.5: Flutter atrial et trouble de conduction atrio-ventriculaire\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/cardiocases.com\/#website\",\"url\":\"https:\/\/cardiocases.com\/\",\"name\":\"Cardiocases\",\"description\":\"Real cardiac device traces, pacemaker &amp; 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