What is the normal mitral valve area (MVA) range?

What is the normal mitral valve area (MVA) range?

• A. 2.5-6 cm^2
• B. 1.0-2.5 cm^2
• C. 3.0-5.0 cm^2
• D. 4.0-7.0 cm^2

Answer: (A)

Normal mitral valve area reflects how wide the mitral orifice is to allow normal blood flow. In adults, the typical range is about 4-6 cm^2, with values well below that suggesting stenosis. Among the options, the range 2.5-6 cm^2 best encompasses the commonly observed normal spectrum and measurement variability, including the lower end near 2.5 cm^2. The other ranges either imply stenosis in most adults (1.0-2.5 cm^2) or exclude portions of the normal range (3.0-5.0 cm^2 and 4.0-7.0 cm^2). So, 2.5-6 cm^2 is the best answer.

Normal mitral valve area reflects how wide the mitral orifice is to allow normal blood flow. In adults, the typical range is about 4-6 cm^2, with values well below that suggesting stenosis. Among the options, the range 2.5-6 cm^2 best encompasses the commonly observed normal spectrum and measurement variability, including the lower end near 2.5 cm^2. The other ranges either imply stenosis in most adults (1.0-2.5 cm^2) or exclude portions of the normal range (3.0-5.0 cm^2 and 4.0-7.0 cm^2). So, 2.5-6 cm^2 is the best answer.