Abstract
An: 2010, Nr.2, Articol Nr. 1
Title: 

THE SURGICAL ANATOMY OF THE AORTIC ROOT AND IT’S VALVE SUPPORTING STRUCTURES

Authors: 

      L. Seres Sturm Jr - Department of Cardiac Surgery, University Pecs (HU)
      Z. Szabolcs - Department of Cardiac Surgery, Semmelweis University Budapest (HU)
      THE SURGICAL ANATOMY OF THE AORTIC ROOT AND IT’S VALVE SUPPORTING STRUCTURES (Abstract): The aortic root, as an anatomo-surgical, functional and clinical unit, is made up of the aortic bulbosinus and the ventricular ejection tract, the annulus, and the trifoliate aortic valve. The structure sustaining the valves is not the fibro-anulus, but the crown, a cylindrical segment extending between the ventriculo-aortic (VAJ) and sinotubular (commissural) junctions (STJ). In between the valvulae there are the intersemilunar (sub-commissural) triangles, intercalated as columns between their base and apex. The junctions and triangles have been isolated from autopsy aortic roots, serially sectioned perpendicularly, and processed for immunohistochemistry (collagen IV, vimentin, CD34, SMA), and also for different trichrome staining methods. VAJ has an intercalated fibrous and lax connective tissue (fibro-spongiosa), located between the myocardium and aorta, to which the base of the valves attaches to in organized architecture. STJ is like a fibrous subendothelial cushion, attached to the aortic wall, and the interleaflet triangles are fibrous. The native valvular support, with mainly fibrous structure, corresponds to the attachment of valvular prostheses.
Key words: AORTIC ROOT JUNCTION, VALVULAR SUPPORT STRUCTURES
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