Aortic Sinus

(redirected from Valsalva sinus)
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Sinus, Aortic

 

(1) In mammals (excluding man), the initial, dilated part of the ascending aorta; the same as the bulbus arteriosis.

(2) In man, part of the cavity of the bulb of the aorta, located between the semilunar valve and the aortic wall.

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The anomalous origin of the left main coronary artery in the right Valsalva sinus has a prevalence of 0.02% to 0.05% [9] and is commonly related to other congenital cardiac anomalies, such as transposition of large vessels, coronary fistulas, aortic valve bicuspid, and tetralogy of Fallot [10].
Valsalva Sinus Aneurysms: Findings at CT and MR Imaging.
Acute myocardial infarction and cardiogenic shock caused by a huge right Valsalva sinus aneurysm.
The aneurysm of the Valsalva sinus seems to be due to the failure of fusion between the aortic media and the heart at the level of the annulus fibrosus of the aortic valve, with subsequent aneurysmal enlargement at this weak point due to the high head of pressure at the root of the aorta (4).