Mitral stenosis stages
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overview
Stages
| Stage | Definition | Valve Anatomy | Valve Hemodynamics | Hemodynamic Consequences | Symptoms |
| A | At risk of MS | Mild diastolic doming of mitral valve leaflets | Normal transmitral velocity | None | None |
| B | Progressive MS | Commissural fusion and diastolic doming of mitral valve Mitral valve area (MVA) > 1.5 cm2 (planimetered) |
Increased transmitral flow velocities MVA > 1.5 cm2 Pressure half time during diastole < 150 ms |
Mild to moderate left atrial enlargement Normal pulmonary pressure at rest |
None |