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Assessing Cardiac Valves - The Pulmonary Valve

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Transcript

Welcome to our 10th lecture assessing the pulmonary or promoting valve. This will be a short lecture since there's not that much to say, the pulmonary valve is best visualize the pair sternal short access great vessel level. Unlike the other valves The most common primary pathology to affect the pulmonary valve is congenital and is more often stenosis than regurgitation. Secondary pulmonary hypertension is common with secondary pulmonary regurgitation is common with pulmonary hypertension and consequent pulmonary root dilatation. As usual, the first step is to assess the valve by 2d for leaflet mythology emotion. The next step is to place color Doppler on the belt and check for abnormal flow jets.

This is an example of mild pulmonary regurgitation. regurgitation is quantified in the same way as for the other valves except that unfortunately, in the case of the pulmonary valve, there aren't that many agreed upon cut offs. So you have Vina contractor but that doesn't have any cutoff. So you could just use those for AR. We also have jet width to Lv Lv ot our vo t width ratio. And the cutoff for that is only for severe PR and is above 0.65.

Same as AR. We also have pressure halftime by continuous wave Doppler. And there's only a cutoff again for severe PR, which is below 100 milliseconds. Remember, that was 200 milliseconds for severe AR. quantification of stenosis is done using peak velocity ingredients. So Place the cursor on the valve and press CW and go to analysis valves pulmonary valve and choose pulmonary valve peak velocity.

Place your cursor at the tip of the envelope and press enter and you get the peak velocity ingredients. The cut offs are For the peak velocity less than three meters per second is mild, between three and four meters per second is moderate and above for severe, the gradients less than 36 millimeters of mercury is mild between 36 and 64 is moderate and above 64 is severe. Again, as usual, these values are included in the cutoff values sheets cluded in the resources section for every lecture. That's it, told you it will be a short lecture. Now on to the next lecture ischemic heart disease.

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