{"id":18789,"date":"2015-01-27T03:08:52","date_gmt":"2015-01-27T03:08:52","guid":{"rendered":"https:\/\/cardiophile.org\/?p=18789"},"modified":"2023-01-03T06:10:26","modified_gmt":"2023-01-03T00:40:26","slug":"dominant-left-coronary-artery","status":"publish","type":"post","link":"https:\/\/johnsonfrancis.org\/professional\/dominant-left-coronary-artery\/","title":{"rendered":"Dominant left coronary artery"},"content":{"rendered":"<p><iframe loading=\"lazy\" width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/ayskIPLoY7Q\" title=\"YouTube video player\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen=\"\"><\/iframe><\/p>\n<h2><span style=\"color: #008000;\">Dominant left coronary artery<\/span><\/h2>\n<p><a href=\"https:\/\/johnsonfrancis.org\/professional\/wp-content\/uploads\/2015\/01\/Dominant-LCA1.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-18899\" src=\"https:\/\/johnsonfrancis.org\/professional\/wp-content\/uploads\/2015\/01\/Dominant-LCA1.jpg\" alt=\"Dominant-LCA\" width=\"700\" height=\"604\" srcset=\"https:\/\/johnsonfrancis.org\/professional\/wp-content\/uploads\/2015\/01\/Dominant-LCA1.jpg 700w, https:\/\/johnsonfrancis.org\/professional\/wp-content\/uploads\/2015\/01\/Dominant-LCA1-300x259.jpg 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/a><\/p>\n<p><em>Left coronary angiogram, showing dominant left circumflex with left posterior descending artery arising from it.&nbsp;<\/em>If the left circumflex coronary artery crosses the crux of the heart to the opposite side, it is known as the dominant artery. When left circumflex is dominant, we call it as the left dominant system. It may be noted that regardless of whether it is a right dominant or left dominant anatomy, it is always the left coronary artery which supplies the major portion of the myocardium as it always supplies a major portion of the left ventricular myocardium which is the dominant ventricle in the adult.<\/p>\n<p><span style=\"color: #0000ff;\"><strong>Frequency of left dominant coronary circulation<\/strong><\/span><\/p>\n<p>In a study by Murphy ES et al, among the control group of 150 individuals, 9% had left dominant coronary system, 12% had a co-dominant system and 79% had a right dominant coronary system.<sup>1<\/sup><\/p>\n<p><span style=\"color: #0000ff;\"><strong>Clinical significance of left dominant system<\/strong><\/span><\/p>\n<p>Balci B and colleagues checked whether coronary dominance has any relation with atherosclerotic coronary artery disease.<sup>2<\/sup> They compared 38 consecutive left dominant coronary angiograms with 459 consecutive right dominant coronary angiograms in a retrospective analysis. They concluded that the extent of coronary atherosclerosis had no relation with coronary dominance. But in the TWENTE trial involving about 1400 participants, there was a higher incidence of periprocedural myocardial infarction in those with dominant left coronary artery undergoing percutaneous coronary intervention.<sup>3<\/sup><\/p>\n<p><span style=\"color: #0000ff;\"><strong>References<\/strong><\/span><\/p>\n<ol>\n<li>Murphy ES, Rosch J, Rahimtoola SH. Frequency and significance of coronary arterial dominance in isolated aortic stenosis.&nbsp;Am J Cardiol. 1977 Apr;39(4):505-9.<\/li>\n<li>Balci B, Yilmaz O. Atherosclerotic involvement in patients with left or right dominant coronary circulation.&nbsp;Kardiol Pol. 2004 Jun;60(6):564-6.<\/li>\n<li>Lam MK, Tandjung K, Sen H, Basalus MW, van Houwelingen KG, Stoel MG, Louwerenburg JW, Linssen GC, Sa\u00efd SA, Nienhuis MB, de Man FH, van der Palen J, von Birgelen C. <a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/24602919\/\">Coronary artery dominance and the risk of adverse clinical events following percutaneous coronary intervention: insights from the prospective, randomised TWENTE trial<\/a>. EuroIntervention. 2015 Jun;11(2):180-7. doi: 10.4244\/EIJV11I2A32. PMID: 24602919.<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>If the left circumflex coronary artery crosses the crux of the heart (junction of interventricular and interatrial grooves posteriorly) to the opposite side, it is known as the dominant artery. <\/p>\n","protected":false},"author":1,"featured_media":57921,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"nf_dc_page":"","footnotes":""},"categories":[18],"tags":[],"class_list":["post-18789","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-angiography-and-interventions"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Left coronary angiogram, showing dominant left circumflex with left posterior descending artery arising from it (LPDA).<\/title>\n<meta name=\"description\" content=\"Left coronary angiogram, showing dominant left circumflex with left posterior descending artery arising from it (LPDA). When left circumflex is dominant, we call it as the left dominant system (dominant left coronary artery).\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/johnsonfrancis.org\/professional\/dominant-left-coronary-artery\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Left coronary angiogram, showing dominant left circumflex with left posterior descending artery arising from it (LPDA).\" \/>\n<meta property=\"og:description\" content=\"Left coronary angiogram, showing dominant left circumflex with left posterior descending artery arising from it (LPDA). When left circumflex is dominant, we call it as the left dominant system (dominant left coronary artery).\" \/>\n<meta property=\"og:url\" content=\"https:\/\/johnsonfrancis.org\/professional\/dominant-left-coronary-artery\/\" \/>\n<meta property=\"og:site_name\" content=\"All About Cardiovascular System and Disorders\" \/>\n<meta property=\"article:published_time\" content=\"2015-01-27T03:08:52+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-01-03T00:40:26+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/johnsonfrancis.org\/professional\/wp-content\/uploads\/2015\/01\/Dominant-LCA1-1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"1035\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Johnson Francis\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Johnson Francis\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/dominant-left-coronary-artery\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/dominant-left-coronary-artery\\\/\"},\"author\":{\"name\":\"Johnson Francis\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/#\\\/schema\\\/person\\\/5441d907049b914770f4bd98fb57feec\"},\"headline\":\"Dominant left coronary artery\",\"datePublished\":\"2015-01-27T03:08:52+00:00\",\"dateModified\":\"2023-01-03T00:40:26+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/dominant-left-coronary-artery\\\/\"},\"wordCount\":334,\"publisher\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/#\\\/schema\\\/person\\\/5441d907049b914770f4bd98fb57feec\"},\"image\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/dominant-left-coronary-artery\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/wp-content\\\/uploads\\\/2015\\\/01\\\/Dominant-LCA1-1.jpg\",\"articleSection\":[\"Angiography and Interventions\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/dominant-left-coronary-artery\\\/\",\"url\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/dominant-left-coronary-artery\\\/\",\"name\":\"Left coronary angiogram, showing dominant left circumflex with left posterior descending artery arising from it (LPDA).\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/dominant-left-coronary-artery\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/dominant-left-coronary-artery\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/wp-content\\\/uploads\\\/2015\\\/01\\\/Dominant-LCA1-1.jpg\",\"datePublished\":\"2015-01-27T03:08:52+00:00\",\"dateModified\":\"2023-01-03T00:40:26+00:00\",\"description\":\"Left coronary angiogram, showing dominant left circumflex with left posterior descending artery arising from it (LPDA). 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