{"id":1173,"date":"2022-07-30T04:05:00","date_gmt":"2022-07-29T22:35:00","guid":{"rendered":"http:\/\/cardiophile.org\/?p=1173"},"modified":"2022-07-30T05:20:50","modified_gmt":"2022-07-29T23:50:50","slug":"aortic-dissection","status":"publish","type":"post","link":"https:\/\/johnsonfrancis.org\/professional\/aortic-dissection\/","title":{"rendered":"Aortic dissection &#8211; mechanisms and classification"},"content":{"rendered":"<p><iframe loading=\"lazy\" title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/fudRoKhkTHI\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<h2><span style=\"color: #008000;\">Aortic dissection &#8211; mechanisms and classification<\/span><\/h2>\n<p>Aortic dissection &#8211; mechanisms and classification:<\/p>\n<p><strong>Mechanisms of aortic dissection<\/strong><\/p>\n<ol>\n<li>Intimal tear<\/li>\n<li>Medial hemorrhage due to rupture of vasa vasorum, extending into the lumen<\/li>\n<\/ol>\n<p style=\"font-weight: normal; margin-bottom: 0in;\" align=\"left\"><strong>Location of intimal tear in aortic dissection<\/strong><\/p>\n<ol>\n<li style=\"font-weight: normal;\">Near the aortic valve<\/li>\n<li style=\"font-weight: normal;\">Region of ligamentum arteriosum<\/li>\n<\/ol>\n<p style=\"font-weight: normal; margin-bottom: 0in;\" align=\"left\"><strong>Stanford classification of aortic dissection<\/strong><\/p>\n<p style=\"margin-bottom: 0in;\" align=\"left\">Depending only on the location of the dissection, not on the location of the intimal tear<\/p>\n<p style=\"margin-bottom: 0in;\" align=\"left\">A: Ascending aorta is involved<\/p>\n<p style=\"font-weight: normal; margin-bottom: 0in;\" align=\"left\">B: Ascending aorta is not involved<\/p>\n<p style=\"font-weight: normal; margin-bottom: 0in;\" align=\"left\"><strong>DeBakey classification of aortic dissection<\/strong><\/p>\n<p style=\"margin-bottom: 0in;\" align=\"left\">II: Ascending aorta<\/p>\n<p style=\"font-weight: normal; margin-bottom: 0in;\" align=\"left\">I: Originates in ascending aorta and extends at least till the arch<\/p>\n<p style=\"font-weight: normal; margin-bottom: 0in;\" align=\"left\">III: Descending aorta<\/p>\n<figure id=\"attachment_54514\" aria-describedby=\"caption-attachment-54514\" style=\"width: 1079px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-54514\" src=\"https:\/\/johnsonfrancis.org\/professional\/wp-content\/uploads\/2009\/04\/DeBakey-classification-of-aortic-dissection.jpg\" alt=\"DeBakey classification of aortic dissection\" width=\"1079\" height=\"689\" srcset=\"https:\/\/johnsonfrancis.org\/professional\/wp-content\/uploads\/2009\/04\/DeBakey-classification-of-aortic-dissection.jpg 1079w, https:\/\/johnsonfrancis.org\/professional\/wp-content\/uploads\/2009\/04\/DeBakey-classification-of-aortic-dissection-300x192.jpg 300w, https:\/\/johnsonfrancis.org\/professional\/wp-content\/uploads\/2009\/04\/DeBakey-classification-of-aortic-dissection-1024x654.jpg 1024w, https:\/\/johnsonfrancis.org\/professional\/wp-content\/uploads\/2009\/04\/DeBakey-classification-of-aortic-dissection-768x490.jpg 768w\" sizes=\"auto, (max-width: 1079px) 100vw, 1079px\" \/><figcaption id=\"caption-attachment-54514\" class=\"wp-caption-text\">DeBakey classification of aortic dissection (Diagrammatic representation)<\/figcaption><\/figure>\n<p style=\"font-weight: normal; margin-bottom: 0in;\" align=\"left\"><strong>Genetic conditions predisposing to aortic dissection<\/strong><\/p>\n<ol>\n<li>Marfan syndrome<\/li>\n<li>Ehlers Danlos syndrome<\/li>\n<li>Turner syndrome<\/li>\n<\/ol>\n<p style=\"font-weight: normal; margin-bottom: 0in;\" align=\"left\"><strong>Post cardiac surgery aortic dissection<\/strong><\/p>\n<p style=\"margin-bottom: 0in;\" align=\"left\">Commonest cause of post cardiac surgery dissection is after aortic valve replacement<\/p>\n<p style=\"margin-bottom: 0in;\" align=\"left\"><strong>Echocardiogram in aortic dissection<\/strong><\/p>\n<p style=\"margin-bottom: 0in;\" align=\"left\">Aortic dissection is diagnosed by visualizing the flap in more than one view, with independent motion and different colour flows in true and false lumens.<\/p>\n<p style=\"font-weight: normal; margin-bottom: 0in;\" align=\"left\">Transthoracic echo may miss one third of aortic dissections while transesophageal can detect almost all cases. Distal ascending aorta and part of the proximal aortic arch may not be visualized well on transesophageal echo due to the intervening air passages.<\/p>\n<p style=\"font-weight: normal; margin-bottom: 0in;\" align=\"left\"><a href=\"_wp_link_placeholder\" data-wplink-edit=\"true\"><strong>Acute aortic syndrome<\/strong><\/a><\/p>\n<p style=\"margin-bottom: 0in;\" align=\"left\">Aortic dissection, penetrating aortic ulcer, intramural hematoma, pseudoaneurysm, impending rupture of a true aneurysm. All these conditions cause acute chest pain mimicking aortic dissection. First three are usually described as acute aortic syndromes.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Aortic dissection: mechanisms, location of intimal tear, classifications and genetic conditions predisposing to aortic dissection.<\/p>\n","protected":false},"author":1,"featured_media":37757,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"nf_dc_page":"","footnotes":""},"categories":[9],"tags":[],"class_list":["post-1173","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-general"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Aortic dissection - mechanisms and classification, genetic predisposition<\/title>\n<meta name=\"description\" content=\"Aortic dissection - mechanisms and classification: Mechanism could be intimal tear or rupture of vasa vasorum. 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