Pulmonary valve stenosis echocardiogram
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
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Echocardiography
2D echocardiography
- Thickened leaflets with systolic bowing in valvular stenosis.
- Difficult to distinguish between valvular, sub valvular and supra valvular stenosis with 2D echocardiography.
- Post stenotic pulmonary artery dilatation can be visualised sometimes.
Doppler echocardiography
- Ante grade velocity increased with corresponding maximum and mean pressure gradients.
- Pulmonary valve area can be calculated using the continuity equation.
- Pulmonary Valve Area = (Cross sectional areaRVOT * VTIRVOT)/ VTIPV
- The site of obstruction can be difficult to diagnose by 2D echo. Cautious use of colour flow mapping and PW Doppler can pin point the location of obstruction.
- Pulmonic Stenosis 1
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- Pulmonic Stenosis 2
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- Pulmonic Stenosis 3
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Severity Assessment
Severity | mild | moderate | severe |
---|---|---|---|
Valve area | >1.0 | 1- 0.5 | <0.5 |
Peak gradient (mm Hg) | <10-25 | 25-40 | >40 |