Mitral Stenosis

ECHONOMY Tools for Echocardiographic Calculations Muhamed Saric, MD, PhD New York University


Reference Values

	Valve Area cm²		Mean Gradient mm Hg
Normal	4.0 - 6.0
Mild Stenosis	> 1.5		<5
Moderate Stenosis	1.0 - 1.5		5 - 10
Severe Stenosis	<1.0		>10

Note
		Normal mitral valve area in adult human is roughly the size of the US quarter (25-cent coin) whose area is 4.6 cm².
Reference
ACC/AHA 2006 guidelines for the management of patients with valvular heart disease. J Am Coll Cardiol 2006 48(3):e1-148.