Mitral valve surgery springer (2010) cut

[...]... area of the mitral valve annulus least supported by connective tissue and is therefore most frequently seen within the posterior mitral valve annulus Increases in annular Fig 1.7  The mitral annulus (a) Dimensions; (b, c) saddle-shaped hyperbolic paraboloid configuration 7 1  Surgical Anatomy of the Mitral and Tricuspid Valve Fig 1.8  The mitral valve annulus dimension can lead to mitral valve insufficiency... much less common and less profound (Fig 1.8) Mitral Valve Leaflets The mitral valve leaflets form a continuous curtain of tissue attached to the mitral annulus that guard the left atrioventricular orifice Although anatomical variations are reported, the mitral valve consists of two main l ­eaflets, the anterior (aortic) and posterior (mural) The anterior mitral valve leaflet separates the left ventricular... The relationship of the coronary sinus and left circumflex artery to the mitral annulus the mitral valve Deep sutures within this region can result in AV node injury Finally, the aortic valve is in close proximity to the mitral valve The inter-trigonal tissue within the anterior mitral valve annulus courses beneath the aortic valve leaflets, with the nadir of the left coronary sinus abutting the left... for recording surgical findings of the mitral valve J Heart Valve Dis 1995;4:70-75 discussion 76–77 10 Lam JH, Ranganathan N, Wigle ED, Silver MD Morphology of the human mitral valve I Chordae tendineae: a new classification Circulation 1970;41:449-458 11 Rusted IE, Scheifley CH, Edwards JE Studies of the mitral valve I Anatomic features of the normal mitral valve and associated structures Circulation... Eberhart RC Anatomic basis for mitral valve modelling J Heart Valve Dis 1994;3:491-496 18 Sedransk KL, Grande-Allen KJ, Vesely I Failure mechanics of mitral valve chordae tendineae J Heart Valve Dis 2002;11:644-650 19 Lomholt M, Nielsen SL, Hansen SB, Andersen NT, Hasenkam JM Differential tension between secondary and primary mitral chordae in an acute in-vivo porcine model J Heart Valve Dis 2002;11:337-345... of the mitral valve The purposes of this chapter are to: (1) present the causes of mitral valve disease, (2) describe the structural and functional abnormalities in mitral valve disease, (3) emphasize the pathphysiologic changes in mitral valve disease, and (4) describe classifications of surgical mitral valve disease Mitral Stenosis The rheumatic fever-induced damage is not well understood However,... aortic valve annulus, superiorly The curtain merges with the left and right fibrous bodies joined by inter-trigonal connective tissue inferiorly This structure stabilizes the interaction between the two valves, referred to as the aorto -mitral continuity (Fig 1.3b) The anterior leaflet of the mitral valve hangs beneath the subaortic curtain, with the anterior mitral valve 5 1  Surgical Anatomy of the Mitral. .. tricuspid valve demonstrates similar functional characteristics to the mitral valve, although less is known about the detailed dynamic physiology of the tricuspid valve Tricuspid Valve Annular Dynamics The tricuspid valve annulus undergoes significant deformation during the cardiac cycle The tricuspid annulus is nonplanar, saddle-shaped in configuration 17 1  Surgical Anatomy of the Mitral and Tricuspid Valve. .. reduces the zone of coaptation, and increases the tendency to mitral valve regurgitation Summary of the Impact of Mitral Valve Physiology Ultimately, all changes in the mitral valve Functional Unit leading up to its closure have the common aim of facilitating adequate leaflet coaptation to prevent regurgitation The early closure of the mitral valve thereby allows isovolumetric contraction to occur, optimizing... filling, and mitral valve function, therefore, potentially plays a 13 1  Surgical Anatomy of the Mitral and Tricuspid Valve fundamental role in optimizing left ventricular contractility This underlines the importance of ensuring early competence of the Functional Unit, and explains the complex interrelationship between the mitral valve functional Unit and overall cardiac performance Mitral Valve Functional . Natural History of Mitral Valve Disease 1 Surgical Anatomy of the Mitral and Tricuspid Valve 3 Thomas A. Barker and Ian C. Wilson 2 Pathology and Classification of Mitral Valve Disease 21 Issam. between the two valves, referred to as the aorto -mitral continuity (Fig. 1.3b). The anterior leaflet of the mitral valve hangs beneath the subaortic curtain, with the anterior mitral valve Fig assessment of the mitral valve, and how this relates to the anatomy encountered at the time of surgical intervention on the mitral valve. Fig. 1.4 Relationship of trigones to the mitral valve commissures.