{"id":10069,"date":"2026-04-01T11:19:58","date_gmt":"2026-04-01T11:19:58","guid":{"rendered":"https:\/\/cardiocases.com\/?post_type=ecg_case&#038;p=10069"},"modified":"2026-04-01T11:19:58","modified_gmt":"2026-04-01T11:19:58","slug":"trace-2-1-bradycardie-sinusale","status":"publish","type":"ecg_case","link":"https:\/\/cardiocases.com\/fr\/ecg_case\/trace-2-1-bradycardie-sinusale\/","title":{"rendered":"Trac\u00e9 2.1: Bradycardie sinusale"},"content":{"rendered":"","protected":false},"featured_media":10068,"template":"","ecg_case_type":[251],"language_ecgcase":[259],"class_list":["post-10069","ecg_case","type-ecg_case","status-publish","has-post-thumbnail","hentry","ecg_case_type-sinus-dysfunction","language_ecgcase-french"],"acf":{"ecg_case_title":"Trac\u00e9 2.1: Bradycardie sinusale","patient_description":"Homme de 64 ans, hypertendu trait\u00e9 par amlodipine; \u00e9lectrocardiogramme de surface de contr\u00f4le; patient asymptomatique","quiz_question":"Concernant cet ECG, quelle(s) est(sont) la(les) r\u00e9ponse(s) vraie(s)?","quiz_answer_1":"le rythme est sinusal","quiz_answer_2":"il existe une bradycardie sinusale","quiz_answer_3":"l\u2019activit\u00e9 atriale est r\u00e9trograde","quiz_answer_4":"il existe un BAV du second degr\u00e9","quiz_answer_5":"il existe un bloc de branche gauche","correct_answer":["A","B"],"ecg_image":10068,"ecg_description":"Activit\u00e9 atriale sinusale (ondes P positives en DI, DII, V5, V6 et n\u00e9gatives en aVR); bradycardie sinusale avec fr\u00e9quence \u00e0 45 bpm, PR normal, QRS fin;","ecg_info_box":"L\u2019existence d\u2019une bradycardie sinusale mod\u00e9r\u00e9e n\u2019est pas pathologique en soit. L\u2019implantation d\u2019un stimulateur ne se justifie qu\u2019en pr\u00e9sence de sympt\u00f4mes.","commentary_ecg":"Ce patiente pr\u00e9sente une bradycardie sinusale correspondant \u00e0 une fr\u00e9quence cardiaque inf\u00e9rieure \u00e0 50 ou 60 bpm (en fonction des d\u00e9finitions) au repos. La diff\u00e9rence entre bradycardie physiologique et pathologique est parfois difficile \u00e0 d\u00e9terminer. En effet, une hypertonie vagale fr\u00e9quemment observ\u00e9e chez les patients sportifs peut expliquer une bradycardie physiologique sans n\u00e9cessit\u00e9 d\u2019investigations particuli\u00e8res ou de traitement. Une \u00e9tiologie m\u00e9dicamenteuse est \u00e9galement fr\u00e9quemment observ\u00e9e (b\u00e9tabloquant, digoxine, amiodarone, inhibiteur calcique\u2026). Le caract\u00e8re pathologique et la sanction th\u00e9rapeutique (implantation d\u2019un stimulateur) sont donc d\u00e9termin\u00e9s par l\u2019existence de sympt\u00f4mes qui sont indispensables mais peuvent \u00eatre plus ou moins s\u00e9v\u00e8res et plus ou moins sp\u00e9cifiques (syncopes, lipothymies, asth\u00e9nie, vertiges). Une insuffisance chronotrope (d\u00e9finie par l\u2019incapacit\u00e9 \u00e0 atteindre une fr\u00e9quence cardiaque \u00e0 l\u2019effort sup\u00e9rieure \u00e0 70, 80 ou 85% de la fr\u00e9quence maximale th\u00e9orique en fonction des d\u00e9finitions) peut s\u2019accompagner de sympt\u00f4mes n\u2019apparaissant qu\u2019\u00e0 l\u2019effort (limitations des capacit\u00e9s d\u2019effort, dyspn\u00e9e d\u2019effort).\r\n\r\nIl a \u00e9t\u00e9 d\u00e9cid\u00e9 de ne pas implanter ce patient asymptomatique pr\u00e9sentant une fonction chronotrope pr\u00e9serv\u00e9e (acc\u00e9l\u00e9ration normale de la fr\u00e9quence cardiaque \u00e0 l\u2019effort) mais de le surveiller avec la r\u00e9alisation r\u00e9guli\u00e8re d\u2019enregistrements Holter- ECG \u00e0 la recherche de bradycardies paroxystiques plus marqu\u00e9es. Un traitement par b\u00e9tabloquant ou par inhibiteur calcique bradycardisant est \u00e0 d\u00e9conseiller pour son hypertension.\r\n","ecg_info_post_answer":"<img class=\"alignnone wp-image-10296 size-large\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/04\/page-065-1024x583.png\" alt=\"\" width=\"800\" height=\"455\" \/>"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Trac\u00e9 2.1: Bradycardie sinusale - 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-2-1-bradycardie-sinusale\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Trac\u00e9 2.1: Bradycardie sinusale - Cardiocases\" \/>\n<meta property=\"og:url\" content=\"https:\/\/cardiocases.com\/fr\/ecg_case\/trace-2-1-bradycardie-sinusale\/\" \/>\n<meta property=\"og:site_name\" content=\"Cardiocases\" \/>\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-2-1-bradycardie-sinusale\/\",\"url\":\"https:\/\/cardiocases.com\/ecg_case\/trace-2-1-bradycardie-sinusale\/\",\"name\":\"Trac\u00e9 2.1: Bradycardie sinusale - Cardiocases\",\"isPartOf\":{\"@id\":\"https:\/\/cardiocases.com\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/cardiocases.com\/ecg_case\/trace-2-1-bradycardie-sinusale\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/cardiocases.com\/ecg_case\/trace-2-1-bradycardie-sinusale\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/03\/trace-2-1-ecg-3-e1775042330136.jpeg\",\"datePublished\":\"2026-04-01T11:19:58+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/cardiocases.com\/ecg_case\/trace-2-1-bradycardie-sinusale\/#breadcrumb\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/cardiocases.com\/ecg_case\/trace-2-1-bradycardie-sinusale\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/cardiocases.com\/ecg_case\/trace-2-1-bradycardie-sinusale\/#primaryimage\",\"url\":\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/03\/trace-2-1-ecg-3-e1775042330136.jpeg\",\"contentUrl\":\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/03\/trace-2-1-ecg-3-e1775042330136.jpeg\",\"width\":1750,\"height\":833},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/cardiocases.com\/ecg_case\/trace-2-1-bradycardie-sinusale\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/cardiocases.com\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Trac\u00e9 2.1: Bradycardie sinusale\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/cardiocases.com\/#website\",\"url\":\"https:\/\/cardiocases.com\/\",\"name\":\"Cardiocases\",\"description\":\"Real cardiac device traces, pacemaker &amp; 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