{"id":1238,"date":"2018-12-10T11:31:18","date_gmt":"2018-12-10T10:31:18","guid":{"rendered":"http:\/\/192.168.1.104\/?page_id=1238"},"modified":"2020-02-06T12:45:14","modified_gmt":"2020-02-06T11:45:14","slug":"tachycardie-atriale-focale","status":"publish","type":"page","link":"http:\/\/vet-ecg.ddns.net\/index.php\/tachycardie-atriale-focale\/","title":{"rendered":"Tachycardie atriale"},"content":{"rendered":"<figure id=\"attachment_1239\" aria-describedby=\"caption-attachment-1239\" style=\"width: 3245px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-1239 size-full\" src=\"http:\/\/vet-ecg.ddns.net\/wp-content\/uploads\/TAF-1.jpg\" alt=\"Tachycardie atriale ectopique (tachycardie atriale focale avec conduction AV 1:1\" width=\"3245\" height=\"1872\"><figcaption id=\"caption-attachment-1239\" class=\"wp-caption-text\">Retour spontan\u00e9 en rythme sinusal apr\u00e8s une tachycardie atriale.<\/figcaption><\/figure>\n<p>La morphologie des complexes QRS per-tachycardie est comparable \u00e0 celle des 4 derniers complexes. La s\u00e9quence P-QRS-T est respect\u00e9e sur toute la dur\u00e9e de l&rsquo;enregistrement.<\/p>\n<p>Une tachycardie atriale prend naissance dans l&rsquo;oreillette droite ou gauche mais en dehors du n\u0153ud sinusal.<\/p>\n<p>La tachycardie atriale est dite focale lorsque l&rsquo;onde P est r\u00e9guli\u00e8re et monomorphe compar\u00e9e \u00e0 la tachycardie atriale multifocale o\u00f9 plusieurs foyers sont pr\u00e9sents sur le m\u00eame trac\u00e9.<\/p>\n<p>Les QRS sont fins et leur amplitude est constante sur l&rsquo;ensemble du trac\u00e9. La tachycardie cesse brutalement (4e complexe en partant de la fin) et le n\u0153ud sinusal reprend le contr\u00f4le du rythme.<\/p>\n<p>La tachycardie initiale (200 bpm) n&rsquo;est donc pas une tachycardie sinusale mais une tachycardie ectopique prenant naissance dans les oreillettes.<\/p>\n<p><strong>Les diff\u00e9rences de morphologie de l&rsquo;onde P:<\/strong><\/p>\n<ul>\n<li>Tout d&rsquo;abord, on remarque que l&rsquo;angle form\u00e9 par le sommet de l&rsquo;onde P ectopique est plus aigu que celui des ondes P d&rsquo;origine sinusale.<\/li>\n<li>Par ailleurs, l&rsquo;amplitude des ondes P varie de 0,3 \u00e0 0,4 mV et, l&rsquo;intervalle PR varie de 70 \u00e0 90 ms.<\/li>\n<\/ul>\n<p>L&rsquo;\u00e9tat g\u00e9n\u00e9ral du chien est d\u00e9grad\u00e9. L&rsquo;\u00e9chographie ne met en \u00e9vidence aucune anomalie ni au niveau abdominal ni au niveau cardiaque.<\/p>\n<p>La cause de cette tachycardie atriale \u00e9tait une hypokali\u00e9mie profonde ( 2 mEQ) induite par un \u00e9pisode de gastro-ent\u00e9rite h\u00e9morragique s\u00e9v\u00e8re.<\/p>\n<figure id=\"attachment_1240\" aria-describedby=\"caption-attachment-1240\" style=\"width: 700px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-1240 size-full\" src=\"http:\/\/vet-ecg.ddns.net\/wp-content\/uploads\/tachycardie-atriale.jpg\" alt=\"s\u00e9quence P-QRS-T ectopique\" width=\"700\" height=\"749\"><figcaption id=\"caption-attachment-1240\" class=\"wp-caption-text\">Diff\u00e9rences entre ondes P ectopiques et ondes P sinusales<\/figcaption><\/figure>\n<p>Autre exemple ci-dessous. Il s&rsquo;agit d&rsquo;un chihuahua dont l&rsquo;\u00e9chocardiographie ne montre pas d&rsquo;anomalies.<\/p>\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"2500\" height=\"1758\" src=\"http:\/\/vet-ecg.ddns.net\/wp-content\/uploads\/TA.jpg\" alt=\"\" class=\"wp-image-3005\"\/><figcaption>Acc\u00e8s de tachycardie atriale non soutenue<\/figcaption><\/figure>\n\n\n<p>On remarque, au milieu du trac\u00e9, une s\u00e9rie de 7 QRS fins dont la fr\u00e9quence avoisine les 170 bpm tandis que sur le reste du trac\u00e9 la fr\u00e9quence\u00a0 varie autour de 70 bpm.<\/p>\n<p>Par ailleurs, les ondes P ont une morphologie nettement diff\u00e9rente selon que l&rsquo;influx provienne du n\u0153ud sinusal ou d&rsquo;une autre partie de l&rsquo;oreillette (complexes extrasystoliques)<\/p>","protected":false},"excerpt":{"rendered":"<p>La morphologie des complexes QRS per-tachycardie est comparable \u00e0 celle des 4 derniers complexes. La s\u00e9quence P-QRS-T est respect\u00e9e sur toute la dur\u00e9e de l&rsquo;enregistrement. Une tachycardie atriale prend naissance dans l&rsquo;oreillette droite ou gauche mais en dehors du n\u0153ud sinusal. La tachycardie atriale est dite focale lorsque l&rsquo;onde P est r\u00e9guli\u00e8re et monomorphe compar\u00e9e &hellip; <a href=\"http:\/\/vet-ecg.ddns.net\/index.php\/tachycardie-atriale-focale\/\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">Tachycardie atriale<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1238","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Tachycardie atriale - Blog d&#039;\u00e9lectrocardiographie v\u00e9t\u00e9rinaire<\/title>\n<meta name=\"description\" content=\"Tachycardie atriale focale: Les diff\u00e9rences de morphologie de l&#039;onde P et de l&#039;intervalle PQ par rapport \u00e0 un rythme sinusal.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"http:\/\/vet-ecg.ddns.net\/index.php\/tachycardie-atriale-focale\/\" \/>\n<meta name=\"twitter:label1\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"http:\\\/\\\/vet-ecg.ddns.net\\\/index.php\\\/tachycardie-atriale-focale\\\/\",\"url\":\"http:\\\/\\\/vet-ecg.ddns.net\\\/index.php\\\/tachycardie-atriale-focale\\\/\",\"name\":\"Tachycardie atriale - 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Les ECG r\u00e9alis\u00e9s ont \u00e9t\u00e9 r\u00e9alis\u00e9s sur des chiens et des chats qui ont tous b\u00e9n\u00e9fici\u00e9 d'une \u00e9chocardiographie.\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Tachycardie atriale - Blog d&#039;\u00e9lectrocardiographie v\u00e9t\u00e9rinaire","description":"Tachycardie atriale focale: Les diff\u00e9rences de morphologie de l'onde P et de l'intervalle PQ par rapport \u00e0 un rythme sinusal.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"http:\/\/vet-ecg.ddns.net\/index.php\/tachycardie-atriale-focale\/","twitter_misc":{"Dur\u00e9e de lecture estim\u00e9e":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"http:\/\/vet-ecg.ddns.net\/index.php\/tachycardie-atriale-focale\/","url":"http:\/\/vet-ecg.ddns.net\/index.php\/tachycardie-atriale-focale\/","name":"Tachycardie atriale - Blog d&#039;\u00e9lectrocardiographie v\u00e9t\u00e9rinaire","isPartOf":{"@id":"http:\/\/vet-ecg.ddns.net\/#website"},"primaryImageOfPage":{"@id":"http:\/\/vet-ecg.ddns.net\/index.php\/tachycardie-atriale-focale\/#primaryimage"},"image":{"@id":"http:\/\/vet-ecg.ddns.net\/index.php\/tachycardie-atriale-focale\/#primaryimage"},"thumbnailUrl":"http:\/\/vet-ecg.ddns.net\/wp-content\/uploads\/TAF-1.jpg","datePublished":"2018-12-10T10:31:18+00:00","dateModified":"2020-02-06T11:45:14+00:00","description":"Tachycardie atriale focale: Les diff\u00e9rences de morphologie de l'onde P et de l'intervalle PQ par rapport \u00e0 un rythme sinusal.","breadcrumb":{"@id":"http:\/\/vet-ecg.ddns.net\/index.php\/tachycardie-atriale-focale\/#breadcrumb"},"inLanguage":"fr-FR","potentialAction":[{"@type":"ReadAction","target":["http:\/\/vet-ecg.ddns.net\/index.php\/tachycardie-atriale-focale\/"]}]},{"@type":"ImageObject","inLanguage":"fr-FR","@id":"http:\/\/vet-ecg.ddns.net\/index.php\/tachycardie-atriale-focale\/#primaryimage","url":"http:\/\/vet-ecg.ddns.net\/wp-content\/uploads\/TAF-1.jpg","contentUrl":"http:\/\/vet-ecg.ddns.net\/wp-content\/uploads\/TAF-1.jpg","width":3245,"height":1872,"caption":"Retour en rythme sinusal apr\u00e8s une tachycardie atriale focale."},{"@type":"BreadcrumbList","@id":"http:\/\/vet-ecg.ddns.net\/index.php\/tachycardie-atriale-focale\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Accueil","item":"http:\/\/vet-ecg.ddns.net\/"},{"@type":"ListItem","position":2,"name":"Tachycardie atriale"}]},{"@type":"WebSite","@id":"http:\/\/vet-ecg.ddns.net\/#website","url":"http:\/\/vet-ecg.ddns.net\/","name":"Blog d&#039;\u00e9lectrocardiographie v\u00e9t\u00e9rinaire","description":"recueil d&#039;ECG de chiens et de chats","publisher":{"@id":"http:\/\/vet-ecg.ddns.net\/#\/schema\/person\/fec4070a47e235fed904fab73cae00b4"},"alternateName":"\u00e9lectrocardiographie v\u00e9t\u00e9rinaire","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"http:\/\/vet-ecg.ddns.net\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"fr-FR"},{"@type":["Person","Organization"],"@id":"http:\/\/vet-ecg.ddns.net\/#\/schema\/person\/fec4070a47e235fed904fab73cae00b4","name":"admin","image":{"@type":"ImageObject","inLanguage":"fr-FR","@id":"http:\/\/vet-ecg.ddns.net\/wp-content\/uploads\/2018\/04\/Zelda-2-ECG-248.jpg","url":"http:\/\/vet-ecg.ddns.net\/wp-content\/uploads\/2018\/04\/Zelda-2-ECG-248.jpg","contentUrl":"http:\/\/vet-ecg.ddns.net\/wp-content\/uploads\/2018\/04\/Zelda-2-ECG-248.jpg","width":248,"height":248,"caption":"admin"},"logo":{"@id":"http:\/\/vet-ecg.ddns.net\/wp-content\/uploads\/2018\/04\/Zelda-2-ECG-248.jpg"},"description":"Les trac\u00e9s publi\u00e9s sur ce site sont issus de diff\u00e9rentes cliniques v\u00e9t\u00e9rinaires de Paris et de sa banlieue durant les 10 derni\u00e8res ann\u00e9es. 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