Echo values
Terms
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Mitral Stenosis
Pressure Half time
Normal - 30-60 msec
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Mitral Stenosis
Pressure Half time
Gray Area - 60-90 msec
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Mitral Stenosis
Pressure Half time
Mild - 90-150 msec
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Mitral Stenosis
Pressure Half time
Moderate - 150-219 msec
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Mitral Stenosis
Pressure Half time
Severe - > equal to 220 msec
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Mitral Valve Area
Normal - 4 to 6 cm square
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Mitral Valve Area
Mild - 1.5 to 2.5 cm2
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Mitral Valve Area
Moderate - 1.0 to 1.5 cm2
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Mitral Valve Area
Severe - < 1.0 cm2
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Mitral Mean pressure gradient
Mild - </equal to 5 mmHg
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Mitral Mean pressure gradient
Moderate - 6 to 12 mmHg
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Mitral Mean pressure gradient
Severe - > 10 mmHg
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MVA formula
Mitral Valve area - 220÷P1/2T
- Aortic Valve Area is determined the contuity formula which is
- 0.785(LVOT diameter)2Squared(V1)÷ V2
- V1=
- LVOT with PW
- V2=
- AV with CW
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Aortic Stenosis
Maximum Inst Pressure Gradient
Mild - 16 to 36 mmHg
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Aortic Stenosis
Maximum Inst Pressure Gradient
Moderate - 36 to 50 mmHg
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Aortic Stenosis
Maximum Inst Pressure Gradient
Moderately Severe - 50 to 64 mmHg
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Aortic Stenosis
Maximum Inst Pressure Gradient
Severe - > 64 mmHg