Aneurysm of sinus of Valsalva
|Aneurysm of sinus of Valsalva|
|Classification and external resources|
Aneurysm of the aortic sinus, also known as the sinus of Valsalva, is comparatively rare. When present, it is usually in either the right (65-85%) or in the noncoronary (10-30%) sinus, rarely in the left (< 5%) sinus.
This type of aneurysm is typically congenital and may be associated with heart defects. It is sometimes associated with Marfan syndrome or Loeys-Dietz syndrome, but may also result from Ehlers-Danlos syndrome, atherosclerosis, syphilis, cystic medial necrosis, chest injury, or infective endocarditis.
If unruptured, this type aneurysm may be asymptomatic and therefore go undetected until symptoms appear or medical imaging is performed for other reasons. A ruptured aneurysm leads to Hemopericardium, hypovolemic shock and, if not treated within minutes, will lead to death by exsanguination. 
Another approach is surgical repair. The determination to perform surgery is usually based upon the diameter of the aortic root, with 5 centimeters being a rule of thumb, and the rate of increase in its size, as determined through repeated echocardiography. (A normal size, by comparison, is 2-3 centimeters.)
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- Gray's anatomy, 1902 ed.
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