Mild MS (MVA) is defined as MVA greater than which value?

Mild MS (MVA) is defined as MVA greater than which value?

• A. 1.0-1.5 cm2
• B. <1.0 cm2
• C. 0.5-1.0 cm2
• D. >1.5 cm2

Answer: (D)

Mitral stenosis severity is determined by the effective mitral valve area (MVA). A normal MVA is roughly 4–6 cm²; as the valve orifice narrows, the area decreases and gradients rise. Mild mitral stenosis corresponds to an MVA greater than 1.5 cm², which means the obstruction is relatively small. Moderate stenosis falls in about 1.0–1.5 cm², and severe stenosis is less than 1.0 cm². So the correct choice is the value describing an MVA greater than 1.5 cm². The other ranges imply moderate or severe stenosis rather than mild.

Mitral stenosis severity is determined by the effective mitral valve area (MVA). A normal MVA is roughly 4–6 cm²; as the valve orifice narrows, the area decreases and gradients rise. Mild mitral stenosis corresponds to an MVA greater than 1.5 cm², which means the obstruction is relatively small. Moderate stenosis falls in about 1.0–1.5 cm², and severe stenosis is less than 1.0 cm². So the correct choice is the value describing an MVA greater than 1.5 cm². The other ranges imply moderate or severe stenosis rather than mild.