{"id":72515,"date":"2019-01-31T13:52:43","date_gmt":"2019-01-31T13:52:43","guid":{"rendered":"http:\/\/humanitasnet-new.local\/malattie\/contractions-ventriculaires-prematurees\/"},"modified":"2025-01-13T03:13:35","modified_gmt":"2025-01-13T03:13:35","slug":"contractions-ventriculaires-prematurees","status":"publish","type":"disease","link":"https:\/\/humanitas-net.humweb.webiz.team\/fr\/diseases\/contractions-ventriculaires-prematurees\/","title":{"rendered":"Contractions ventriculaires pr\u00e9matur\u00e9es"},"content":{"rendered":"<h2 id=\"definition\">D\u00e9finition<\/h2>\n<p>Les contractions ventriculaires pr\u00e9matur\u00e9es (CVP) sont des battements cardiaques anormaux qui proviennent des ventricules du c\u0153ur. Elles sont caus\u00e9es par une &#8220;irritabilit\u00e9&#8221; \u00e9lectrique du muscle cardiaque des ventricules et perturbent le rythme normal du c\u0153ur, provoquant une bascule ou un battement saut\u00e9 dans la poitrine. Les contractions ventriculaires pr\u00e9matur\u00e9es sont tr\u00e8s fr\u00e9quentes et sont susceptibles d&#8217;appara\u00eetre chez les personnes \u00e2g\u00e9es, les personnes hypertendues et les personnes souffrant de maladies cardiaques.<\/p>\n<p>Les contractions ventriculaires pr\u00e9matur\u00e9es sont \u00e9galement appel\u00e9es :<\/p>\n<ul>\n<li>Complexes ventriculaires pr\u00e9matur\u00e9s<\/li>\n<li>PVC<\/li>\n<li>Battements pr\u00e9matur\u00e9s du ventricule<\/li>\n<li>Extrasystoles<\/li>\n<\/ul>\n<p>Les options de traitement des contractions ventriculaires pr\u00e9matur\u00e9es consistent g\u00e9n\u00e9ralement \u00e0 traiter les probl\u00e8mes cardiaques sous-jacents pour aider \u00e0 pr\u00e9venir d&#8217;autres complications qui pourraient survenir ou, dans les cas graves, une insuffisance cardiaque.<\/p>\n<p>&nbsp;<\/p>\n<h2 id=\"symptomes\">Sympt\u00f4mes<\/h2>\n<p>Bien que les contractions ventriculaires pr\u00e9matur\u00e9es ne provoquent souvent aucun sympt\u00f4me, elles peuvent provoquer une sensation \u00e9trange dans la poitrine, comme :<\/p>\n<ul>\n<li>Le rythme flip-flop<\/li>\n<li>Bruit de battement<\/li>\n<li>Sensation de mart\u00e8lement<\/li>\n<li>Rythme cardiaque irr\u00e9gulier<\/li>\n<li>Sensibilisation accrue aux battements du c\u0153ur<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h2 id=\"causes\">Causes<\/h2>\n<p>Le c\u0153ur est compos\u00e9 de quatre cavit\u00e9s : deux cavit\u00e9s sup\u00e9rieures (oreillettes) et deux cavit\u00e9s inf\u00e9rieures (ventricules). Le rythme naturel du c\u0153ur est normalement contr\u00f4l\u00e9 par le n\u0153ud sinusal (n\u0153ud SA), une zone de cellules sp\u00e9cialis\u00e9es situ\u00e9e dans l&#8217;oreillette droite.<\/p>\n<p>Le n\u0153ud sinusal agit comme un stimulateur cardiaque naturel et envoie des signaux \u00e9lectriques qui d\u00e9clenchent le rythme cardiaque normal.<\/p>\n<p>Pendant la contraction ventriculaire pr\u00e9matur\u00e9e, les contractions anormales sont d\u00e9clench\u00e9es par l&#8217;irritabilit\u00e9 \u00e9lectrique du muscle cardiaque des ventricules et peuvent \u00eatre caus\u00e9es par :<\/p>\n<ul>\n<li>Crises cardiaques<\/li>\n<li>Maladies cardiaques<\/li>\n<li>Manque d&#8217;oxyg\u00e8ne<\/li>\n<li>D\u00e9s\u00e9quilibres \u00e9lectrolytiques dans l&#8217;organisme<\/li>\n<li>Certains m\u00e9dicaments<\/li>\n<li>Consommation excessive d&#8217;alcool<\/li>\n<li>Consommation de drogues illicites<\/li>\n<\/ul>\n<p>Par cons\u00e9quent, les battements irr\u00e9guliers du c\u0153ur sont moins efficaces pour pomper le sang dans tout le corps.<\/p>\n<p>&nbsp;<\/p>\n<h2 id=\"facteurs-de-risque\">Facteurs de risque<\/h2>\n<p>Certains facteurs qui peuvent augmenter ou d\u00e9clencher le risque de contractions ventriculaires pr\u00e9matur\u00e9es incluent notamment :<\/p>\n<ul>\n<li>Consommation de caf\u00e9ine<\/li>\n<li>Consommation d&#8217;alcool<\/li>\n<li>Usage du tabac<\/li>\n<li>Consommation de drogues illicites<\/li>\n<li>Hypertension art\u00e9rielle (hypertension)<\/li>\n<li>Malaise<\/li>\n<li>Certaines maladies cardiaques (maladie cardiaque, crise cardiaque, insuffisance cardiaque)<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h2 id=\"complications\">Complications<\/h2>\n<p>Certaines complications pouvant d\u00e9couler de contractions ventriculaires pr\u00e9matur\u00e9es fr\u00e9quentes ou de certains mod\u00e8les de contractions ventriculaires pr\u00e9matur\u00e9es peuvent noamment inclure :<\/p>\n<ul>\n<li>Arythmies : un trouble qui cause un rythme cardiaque irr\u00e9gulier (battements du c\u0153ur trop rapides ou trop lents)<\/li>\n<li>Cardiomyopathie : maladie acquise ou h\u00e9r\u00e9ditaire du muscle cardiaque, entra\u00eenant un affaiblissement du c\u0153ur.<\/li>\n<li>Dans de rares cas, des contractions pr\u00e9matur\u00e9es fr\u00e9quentes peuvent entra\u00eener des rythmes cardiaques dangereux et m\u00eame la mort cardiaque subite.<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h2 id=\"traitement\">Traitement<\/h2>\n<p>La plupart des personnes souffrant de contractions ventriculaires pr\u00e9matur\u00e9es (CPV) et dont le c\u0153ur est par ailleurs en bonne sant\u00e9 n&#8217;ont pas besoin de traitement. Dans certains cas, cependant, une maladie cardiaque sous-jacente peut d\u00e9clencher de graves perturbations du rythme cardiaque.<\/p>\n<p>Dans ces cas, le traitement consiste habituellement \u00e0 :<\/p>\n<ul>\n<li>Apporter certains changements \u00e0 son mode de vie : l&#8217;\u00e9limination de la caf\u00e9ine ou du tabac peut aider \u00e0 r\u00e9duire la fr\u00e9quence et la gravit\u00e9 des sympt\u00f4mes associ\u00e9s aux contractions ventriculaires pr\u00e9matur\u00e9es.<\/li>\n<li>Prise de certains m\u00e9dicaments : les b\u00eata-bloquants, utilis\u00e9s pour traiter l&#8217;hypertension art\u00e9rielle et les maladies cardiaques, peuvent r\u00e9primer les contractions pr\u00e9matur\u00e9es. D&#8217;autres antiarythmiques ou inhibiteurs calciques peuvent \u00eatre utilis\u00e9s pour aider \u00e0 r\u00e9guler la fonction cardiaque.<\/li>\n<li>Ablation par cath\u00e9ter radiofr\u00e9quence : une proc\u00e9dure qui utilise l&#8217;\u00e9nergie de radiofr\u00e9quence pour d\u00e9truire la zone du tissu cardiaque qui cause des contractions irr\u00e9guli\u00e8res.<\/li>\n<\/ul>\n","protected":false},"featured_media":0,"template":"","class_list":["post-72515","disease","type-disease","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Contractions ventriculaires pr\u00e9matur\u00e9es - Humanitas.net<\/title>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Contractions ventriculaires pr\u00e9matur\u00e9es - Humanitas.net\" \/>\n<meta property=\"og:description\" content=\"D\u00e9finition Les contractions ventriculaires pr\u00e9matur\u00e9es (CVP) sont des battements cardiaques anormaux qui proviennent des ventricules du c\u0153ur. 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