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19 Cards in this Set
- Front
- Back
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What is the best 2D view for a transthoracic examination of the pulmonic valve
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Parasternal short axis at the aortic valve level
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In an M-Mode parasternal view of the pulmonic valve, how many leaflets will be intersected by the beam?
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One Leaflet
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Normal flow velocity range in the pulmonary outflow tract
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.6 - .9 m/sec
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What is the acceleration time?
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from the onset of ejection to peak systolic velocity
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Normal acceleration time for the pulmonic valve
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>140ms
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What are M-Mode finding in pulmonary stenosis?
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Accentuated A wave amplitude
Thickening of the leaflets |
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What cusp is usually demonstrated during an M-Mode examination?
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left posterior cusp
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The A-dip or A-point coincides with what points of the cardiac cycle and on the ECG?
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Atrial systole and the PR segment
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What is a normal A wave amplitude?
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2.7 mm
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Most common cause of pulmonary stenosis?
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congenital stenosis
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Other causes of pulmonary stenosis?
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rheumatic fever,
carcinoid heart disease sinus of valsalva aneurysm |
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Name the three pulmonic cusps
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right posterior, left posterior, and anterior
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Is rheumatic disease of the pulmonic valve common or rare?
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Rare
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Name some physiologic findings in pulmonic valve stenosis...
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prominent jugular venous A-ware,
slow sustained RV lift, RV hypertrophy, post-stenotic dilatation of pulmonary artery |
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While performing auscultation, what sounds will be heard during pulmonic valve stenosis?
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A harsh systolic ejection murmur
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In pulmonic stenosis, what type of treatment in necessary if the systolic pressure gradient across the valve is greater than 50 mmHg or greater than 70 mmHg in the RV?
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Surgery
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What are some common 2D findings in pulmonic stenosis?
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RVH,
systolic doming of the pulmonary valve, flattening of the IVS( "D shape of LV") |
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What form of doppler must be used to assess the severity of pulmonic valve stenosis?
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CWD - continuous wave doppler
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Equation used to calculate the pressure gradient across the stenotic pulmonary valve?
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Bernoulli equation, P=4V^2
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