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Sinus of Valsalva Aneurism

The sinus of Valsalva are anatomic structures located within the right and left aortic cusps that provide blood flow from the proximal aorta to the right and left coronary arteries. Sinus of Valsalva aneurisms (SVA), or a dilatation between the tunica media and the aortic annulus, can be congenital or acquired. SVA's may be multifactorial, but some sources have identified a lack of development of normal elastic tissue and abnormal development of the bulbus cordis. SVA's most often occur on the right sinus of Valsalva (65-85%) and less often on the non-coronary (10-30%)and left (5%) coronary sinuses Other disease processes that involve the aortic root (e.g. atherosclerotic aneurysms, syphilis, endocarditis, cystic medial necrosis, chest trauma) may also produce SVA, although this usually involves multiple sinuses.

Complications

SVA's may enlarge enough to impinge on nearby structures such as the left atrium and may even rupture and lead to the shunting of blood from the coronary sinus to the right atrium or right ventricle. If an SVA ruptures into the pericardial space, a medical emergency called cardiac tamponade may develop.

Wiki Med
Hi I'm contacting you because, as a participant at Wikiproject Medicine, you may be interested in a new non-profit organization we're forming at m:WikiMed. Our purpose is to help improve the range and quality of free online medical content, and we'll be working with like-minded organizations, such as the World Health Organization, professional and scholarly societies, medical schools, governments and NGOs - including Translators Without Borders. Hope to see you there! Anthonyhcole (talk) 05:21, 20 December 2012 (UTC)

The Wikipedia Library now offering accounts from Cochrane Collaboration (sign up!)
The Wikipedia Library gets Wikipedia editors free access to reliable sources that are behind paywalls. Because you are signed on as a medical editor, I thought you'd want to know about our most recent donation from Cochrane Collaboration. Cheers, Ocaasit &#124; c 20:30, 16 June 2013 (UTC)
 * Cochrane Collaboration is an independent medical nonprofit organization that conducts systematic reviews of randomized controlled trials of health-care interventions, which it then publishes in the Cochrane Library.
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