Space
Aortic sinuses (of Valsalva)
The expanded root spaces beside the aortic cusps
High-yield
The cusp attachments form a scalloped three-dimensional boundary; a single flat ring does not describe the whole aortic root.
Overview
Each usual aortic cusp is backed by a bulging portion of the root wall, forming a sinus. These spaces lie below the sinotubular junction. Coronary openings normally occupy the right and left sinuses, while the third is designated non-coronary.
Reference facts
- Boundaries
- The root wall and corresponding cusp enclose each sinus, extending upward to the sinotubular junction
- Contents
- Blood-filled spaces, usually with right and left coronary ostia in their named sinuses
- Communications
- Continuous with the aortic lumen; the coronary ostia lead into the coronary arteries
Clinical correlation
A sinus aneurysm can distort adjacent structures or rupture into a cardiac chamber, creating an abnormal communication. Its consequences depend on the sinus involved and the site of rupture.
Frequently asked questions
What are the boundaries of the aortic sinuses (of Valsalva)?
The root wall and corresponding cusp enclose each sinus, extending upward to the sinotubular junction.
What do the aortic sinuses (of Valsalva) contain?
The aortic sinuses (of Valsalva) contain the blood-filled spaces, usually with right and left coronary ostia in their named sinuses.
What do the aortic sinuses (of Valsalva) communicate with?
Continuous with the aortic lumen; the coronary ostia lead into the coronary arteries.