{"id":1061,"date":"2018-11-12T09:07:41","date_gmt":"2018-11-12T08:07:41","guid":{"rendered":"http:\/\/vet-ecg2.ddns.net\/?page_id=1061"},"modified":"2019-11-11T17:03:53","modified_gmt":"2019-11-11T16:03:53","slug":"cmd-3","status":"publish","type":"page","link":"http:\/\/vet-ecg.ddns.net\/index.php\/cmd-3\/","title":{"rendered":"CMD-3"},"content":{"rendered":"
\"Fibrillation
Hypervoltage des QRS et trouble du rythme dans un cas de cardiomyopathie dilat\u00e9e.<\/figcaption><\/figure>\n

\u00a0<\/p>\n

Cet enregistrement \u00e0 50 mm\/s et 5 mm\/mV a \u00e9t\u00e9 r\u00e9alis\u00e9 sur un cocker de 15 kg.<\/p>\n

Le rythme n’est pas sinusal. Les ondes P ne sont g\u00e9n\u00e9ralement pas visibles. Seul le 6e complexe est pr\u00e9c\u00e9d\u00e9 d’une onde P.<\/p>\n

La fr\u00e9quence cardiaque est tr\u00e8s \u00e9lev\u00e9e et l’arythmie peu perceptible.<\/p>\n

La partie descendante de l’onde R en D1 est crochet\u00e9e.<\/p>\n

L’amplitude des QRS est de 4,5 mV et leur dur\u00e9e approche les 70 ms.<\/p>\n

Ce trac\u00e9 pose un probl\u00e8me diagnostique. En effet, en l’absence de dissociation atrio-ventriculaire patente, il est difficile de trancher entre une tachycardie ventriculaire et une fibrillation atriale avec bloc de branche gauche.<\/p>\n

Le trac\u00e9 du m\u00eame animal, r\u00e9alis\u00e9 cette fois, \u00e0 25 mm\/s (image ci-dessous), nous aide \u00e0 y voir plus clair puisque l’on per\u00e7oit maintenant une arythmie prononc\u00e9e (175-270 bpm) et des ondes P dissoci\u00e9es des QRS en D1.<\/p>\n\n\n

\"\"
Fibrillation atriale<\/figcaption><\/figure>\n\n\n

Ce trouble du rythme tr\u00e8s rapide est un facteur aggravant car le d\u00e9bit cardiaque est effondr\u00e9 en raison d’ un temps de remplissage diastolique tr\u00e8s court.<\/p>\n

L’\u00e9chocardiographie a mis en \u00e9vidence une cardiomyopathie dilat\u00e9e.<\/p>\n

La fraction de raccourcissement est de 8%.<\/p>\n

Un traitement antiarythmique a permis le retour en rythme sinusal comme le montre l’image ci-dessous. Les ondes P d\u00e9polarisent maintenant le n\u0153ud atrio-ventriculaire. Le 3e complexe est une extrasystole atriale.<\/p>\n\n\n

\"\"<\/figure>\n","protected":false},"excerpt":{"rendered":"

\u00a0 Cet enregistrement \u00e0 50 mm\/s et 5 mm\/mV a \u00e9t\u00e9 r\u00e9alis\u00e9 sur un cocker de 15 kg. Le rythme n’est pas sinusal. Les ondes P ne sont g\u00e9n\u00e9ralement pas visibles. Seul le 6e complexe est pr\u00e9c\u00e9d\u00e9 d’une onde P. La fr\u00e9quence cardiaque est tr\u00e8s \u00e9lev\u00e9e et l’arythmie peu perceptible. La partie descendante de l’onde … Continuer la lecture de CMD-3<\/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-1061","page","type-page","status-publish","hentry"],"yoast_head":"\nCMD-3 - Blog d'\u00e9lectrocardiographie v\u00e9t\u00e9rinaire<\/title>\n<meta name=\"description\" content=\"cardiomyopathie dilat\u00e9e associ\u00e9e \u00e0 un trouble du rythme soutenu. 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