Morphology and Morphometry of the Mitral Valve Complex

Vidulatha, K (2015) Morphology and Morphometry of the Mitral Valve Complex. Masters thesis, Madurai Medical College, Madurai.


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Fifty adult human hearts were studies for morphology and morphometry of the mitral valve complex. The Mitral annulus its shape, its circumstance, length of the commissures, the chordae tendineae, the length and width of both the leaflets, the measurement for the rough zone and clear zone for both the leaflets, the number of muscle bellies in both the papillary muscles, the site of origin of papillary muscle and extent of protrusion of the papillary muscle in the ventricular cavity were studies. The Mitral valve apparatus is a complex structure that is altered in varied disease states. Imaging the Mitral valve requires an understanding of the normal anatomy and how this complex structure is altered by disease states. The classical image of the Mitral valve is a bicuspid valve with Mitral annulus, the commissures, chordae tendineae, two leaflets and two papillary muscles. Mitral regurgitation is increasingly prevalent. Despite the fall in rheumatic disease, it is the most common valvular lesion seen in adults in India. The Mitral annulus is fibrous ring that connects with the leaflets. It is not a continuous ring around the mitral orifice and appears to be more D-shaped. The Mitral valve is a continuous veil inserted around the circumference of the mitral orifice. The free edges of the leaflets has several indentations. Two of these indentations, the anterolateral and posteromedial commissures, divide the leaflets into anterior and posterior. Normally, the leaflets are thin, pliable, translucent, and soft. Each leaflet has an atrial and ventricular surface. The chordae tendineae are small fibrous strings that originate either from tha apical portion of the papillary muscles or directly from the ventricular wall and insert into the valve leaflets. The muscle papillary muscles represent the muscular components of the mitral apparatus. The papillary muscles norally arise from the apex and middle third of the left ventricular wall.

Item Type: Thesis (Masters)
Uncontrolled Keywords: Mitral annulus ; commissures ; leaflets ; chordae tendineae ; papillary muscles.
Subjects: MEDICAL > Anatomy
Depositing User: Punitha K
Date Deposited: 05 May 2018 03:12
Last Modified: 05 May 2018 03:12

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