{"id":66704,"date":"2026-04-20T18:14:57","date_gmt":"2026-04-20T12:44:57","guid":{"rendered":"https:\/\/johnsonfrancis.org\/professional\/?p=66704"},"modified":"2026-04-20T18:14:58","modified_gmt":"2026-04-20T12:44:58","slug":"aortic-dissection-causes-diagnosis-management","status":"publish","type":"post","link":"https:\/\/johnsonfrancis.org\/professional\/aortic-dissection-causes-diagnosis-management\/","title":{"rendered":"Aortic Dissection: Causes, Diagnosis, Management"},"content":{"rendered":"<iframe loading=\"lazy\" width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/NA2Ndnr1bvM?si=ppMyBKLDS2DTKGGG\" title=\"YouTube video player\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n\n<p class=\"wp-block-paragraph\">Aortic dissection is a critical, life-threatening condition where a tear occurs in the inner layer (intima) of the aorta. This allows blood to surge through the tear, creating a &#8220;false lumen&#8221; or second channel between the layers of the aortic wall.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">## Classification Systems<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Clinicians primarily use two systems to categorize dissections, which dictates the urgency and type of intervention required.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. Stanford Classification (Most Common)<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"\"><strong>Type A:<\/strong> Involves the <strong>ascending aorta<\/strong>. This is a surgical emergency due to the risk of aortic rupture, coronary artery occlusion, or acute aortic regurgitation.<\/li>\n\n\n\n<li class=\"\"><strong>Type B:<\/strong> Involves only the <strong>descending aorta<\/strong> (distal to the left subclavian artery). These are often managed medically unless complications arise.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">2. DeBakey Classification<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"\"><strong>Type 1:<\/strong> Originates in the ascending aorta, aortic arch, and descending aorta<\/li>\n\n\n\n<li class=\"\"><strong>Type 2: <\/strong>Originates in and is limited to the ascending aorta<\/li>\n\n\n\n<li class=\"\"><strong>Type 3:<\/strong> Begins in the descending aorta and extends distally above the diaphragm (type 3a) or below the diaphragm (type 3b)<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">## Pathophysiology &amp; Risk Factors<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The primary driver is often a combination of high wall tension and a weakened arterial media.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"\"><strong>Hypertension:<\/strong> The most significant risk factor (present in ~70-80% of cases).<\/li>\n\n\n\n<li class=\"\"><strong>Genetic Connective Tissue Disorders:<\/strong> Marfan syndrome, Ehlers-Danlos syndrome, and Loeys-Dietz syndrome.<\/li>\n\n\n\n<li class=\"\"><strong>Congenital Anomalies:<\/strong> Bicuspid aortic valve or Coarctation of the aorta.<\/li>\n\n\n\n<li class=\"\"><strong>Inflammatory Conditions:<\/strong> Giant cell arteritis.<\/li>\n\n\n\n<li class=\"\"><strong>Iatrogenic\/Trauma:<\/strong> Cardiac catheterization or blunt force trauma.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">## Clinical Presentation<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The &#8220;classic&#8221; presentation is often described as:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"\"><strong>Pain:<\/strong> Sudden, excruciating, &#8220;tearing&#8221; or &#8220;ripping&#8221; sensation.<\/li>\n\n\n\n<li class=\"\"><strong>Location:<\/strong> Anterior chest pain (Type A) or interscapular back pain (Type B).<\/li>\n\n\n\n<li class=\"\"><strong>Neurological Deficits:<\/strong> Stroke symptoms or paraplegia if branch vessels (carotids or spinal arteries) are involved.<\/li>\n\n\n\n<li class=\"\"><strong>Pulse Deficits:<\/strong> A significant difference in blood pressure between arms or absent pulses in the lower extremities.<\/li>\n\n\n\n<li class=\"\"><strong>New Diastolic Murmur:<\/strong> Indicative of acute aortic regurgitation.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">## Diagnostic Evaluation<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Time is the most critical factor in diagnosis.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"\"><strong>CT Angiography (CTA):<\/strong> The gold standard for stable patients due to high sensitivity and specificity. It clearly visualizes the intimal flap and the extent of the dissection.<\/li>\n\n\n\n<li class=\"\"><strong>Transesophageal Echocardiography (TEE):<\/strong> Preferred for unstable patients or in the OR; it is excellent for evaluating the proximal aorta and aortic valve involvement.<\/li>\n\n\n\n<li class=\"\"><strong>ECG:<\/strong> Often used to rule out a myocardial infarction, though a dissection can cause an MI if it involves the coronary ostia (most commonly the RCA).<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">## Management Strategies<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Initial Stabilization (The &#8220;Anti-Impulse&#8221; Therapy)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The goal is to reduce the shear stress on the aortic wall by lowering heart rate and blood pressure:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"\"><strong>Heart Rate Target:<\/strong> &lt; 60 bpm (typically using IV Beta-blockers like Esmolol or Labetalol).<\/li>\n\n\n\n<li class=\"\"><strong>Systolic BP Target:<\/strong> 100\u2013120 mmHg.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Definitive Treatment<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"\"><strong>Stanford Type A:<\/strong> Requires <strong>urgent surgical repair<\/strong> to replace the ascending aorta and potentially the aortic arch or valve.<\/li>\n\n\n\n<li class=\"\"><strong>Stanford Type B:<\/strong> Generally managed with <strong>aggressive medical therapy<\/strong> (BP control). However, Thoracic Endovascular Aortic Repair (TEVAR) is indicated if there is evidence of malperfusion, refractory pain, or rapid expansion.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">## Complications<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li class=\"\"><strong>Aortic Rupture:<\/strong> Leading to cardiac tamponade or hemothorax.<\/li>\n\n\n\n<li class=\"\"><strong>Malperfusion Syndrome:<\/strong> Ischemia to the brain, kidneys, gut, or limbs.<\/li>\n\n\n\n<li class=\"\"><strong>Aneurysmal Dilation:<\/strong> The false lumen may weaken over time, leading to chronic aneurysm formation.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Aortic dissection is a critical, life-threatening condition where a tear occurs in the inner layer (intima) of the aorta. This allows blood to surge through the tear, creating a &#8220;false lumen&#8221; or second channel between the layers of the aortic wall. ## Classification Systems Clinicians primarily use two systems to categorize dissections, which dictates the [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":66705,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"nf_dc_page":"","footnotes":""},"categories":[9],"tags":[],"class_list":["post-66704","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-general"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Aortic Dissection: Causes, Diagnosis, Management - All About Cardiovascular System and Disorders<\/title>\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\/aortic-dissection-causes-diagnosis-management\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Aortic Dissection: Causes, Diagnosis, Management - All About Cardiovascular System and Disorders\" \/>\n<meta property=\"og:description\" content=\"Aortic dissection is a critical, life-threatening condition where a tear occurs in the inner layer (intima) of the aorta. 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