{"id":3167,"date":"2020-10-15T11:37:04","date_gmt":"2020-10-15T09:37:04","guid":{"rendered":"http:\/\/vet-ecg.ddns.net\/?page_id=3167"},"modified":"2020-10-15T11:44:04","modified_gmt":"2020-10-15T09:44:04","slug":"bloc-de-branche-gauche","status":"publish","type":"page","link":"http:\/\/vet-ecg.ddns.net\/index.php\/bloc-de-branche-gauche\/","title":{"rendered":"Bloc de branche gauche"},"content":{"rendered":"\n
\"Bloc
Bloc de branche gauche<\/figcaption><\/figure>\n\n\n

Ce spitz de 14 ans pr\u00e9sentant un l\u00e9ger embonpoint (5 kg) est pr\u00e9sent\u00e9 pour essoufflement \u00e0 l’effort.<\/p>\n

L’\u00e9tat g\u00e9n\u00e9ral est bon, il ne tousse pas.<\/p>\n

L’\u00e9chocardiographie ne met en \u00e9vidence aucune anomalie du c\u0153ur gauche. L’examen r\u00e9v\u00e8le un tronc pulmonaire mod\u00e9r\u00e9ment dilat\u00e9, t\u00e9moin d’une hypertension art\u00e9rielle pulmonaire.<\/p>\n

L’ECG montre un rythme sinusal, cependant la morphologie des QRS est inhabituelle pour un chien de 5 kg indemne de cardiopathie gauche.<\/p>\n

En effet, la dur\u00e9e de QRS atteint 75 ms alors qu’elle devrait \u00eatre inf\u00e9rieure \u00e0 50 ms. On remarque par ailleurs, un crochetage du sommet de l’onde R qui refl\u00e8te l’asynchronisme des deux ventricules. Les ondes T sont oppos\u00e9es aux QRS.<\/p>\n

Le bloc de branche gauche (BBG) se rencontre plus rarement que le bloc de branche droit. L’origine n’est g\u00e9n\u00e9ralement pas retrouv\u00e9e. Ce trouble de la conduction situ\u00e9 dans la branche gauche du faisceau de His peut aboutir \u00e0 une dysfonction systolique et aggraver ou d\u00e9clencher une insuffisance cardiaque.<\/p>\n

Le diagnostic diff\u00e9rentiel d’avec une hypertrophie ventriculaire gauche\u00a0 est, ici, facilit\u00e9 par la pr\u00e9sence d’une onde P pointue que l’on ne rencontre pas dans les cardiopathies gauches. D’autre part,\u00a0 l’\u00e9largissement des QRS est trop marqu\u00e9 (pour un chien de 5 kg) pour correspondre \u00e0 une hypertrophie ventriculaire gauche.<\/p>","protected":false},"excerpt":{"rendered":"

Ce spitz de 14 ans pr\u00e9sentant un l\u00e9ger embonpoint (5 kg) est pr\u00e9sent\u00e9 pour essoufflement \u00e0 l’effort. L’\u00e9tat g\u00e9n\u00e9ral est bon, il ne tousse pas. L’\u00e9chocardiographie ne met en \u00e9vidence aucune anomalie du c\u0153ur gauche. L’examen r\u00e9v\u00e8le un tronc pulmonaire mod\u00e9r\u00e9ment dilat\u00e9, t\u00e9moin d’une hypertension art\u00e9rielle pulmonaire. L’ECG montre un rythme sinusal, cependant la morphologie … Continuer la lecture de Bloc de branche gauche<\/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-3167","page","type-page","status-publish","hentry"],"yoast_head":"\nBloc de branche gauche - Blog d'\u00e9lectrocardiographie v\u00e9t\u00e9rinaire<\/title>\n<meta name=\"description\" content=\"Bloc de branche gauche chez un spitz de 14 ans sans atteinte du coeur gauche. 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