MAC is calcification of which structure?

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Prepare for the Ultrasound Registry Review (URR) MV Abnormalities and Disease Test. Enhance your studies with quizzes, flashcards, and detailed explanations. Pass your exam with confidence!

Multiple Choice

MAC is calcification of which structure?

Explanation:
Mitral annulus calcification is calcification of the fibrous ring that supports the mitral valve, most commonly along the posterior portion of the annulus. On echocardiography it appears as a dense, bright area along the mitral annulus with shadowing. This distinguishes it from calcifications of the left ventricular wall or the left atrial wall, which involve different structures, and from calcification of the aortic root, which is at the aortic side of the heart. MAC reflects degenerative aging of the mitral ring and can stiffen the annulus, sometimes contributing to mitral regurgitation or, less commonly, mitral stenosis.

Mitral annulus calcification is calcification of the fibrous ring that supports the mitral valve, most commonly along the posterior portion of the annulus. On echocardiography it appears as a dense, bright area along the mitral annulus with shadowing. This distinguishes it from calcifications of the left ventricular wall or the left atrial wall, which involve different structures, and from calcification of the aortic root, which is at the aortic side of the heart. MAC reflects degenerative aging of the mitral ring and can stiffen the annulus, sometimes contributing to mitral regurgitation or, less commonly, mitral stenosis.

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