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MS numbers

Mitral stenosis measurements

Technique/severityValue range (with units)
Pressure half time (P ½ T) normal: 30-60 milliseconds
Pressure half time (P ½ T) mild MS: 90-150 msec
Pressure half time (P ½ T) moderate MS: 150-219 msec
Pressure half time (P ½ T) severe MS: 220 msec or longer
Mitral valve area (MVA) normal: 2.5-4 cm2
Mitral valve area (MVA) mild MS: 1.5-2.5 cm2
Mitral valve area (MVA) moderate MS: 1.0-1.5 cm2
Mitral valve area (MVA) severe MS: <1.0 cm2
Mean gradient findings: mild MS: <5 mmHg
Mean gradient findings: moderate MS: 5-12 mmHg
Mean gradient findings: severe MS: >12 mmHg
Created by: lefut
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