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Answer :
Final answer:
The formula used for determining tricuspid valve area (TVA) in tricuspid valve stenosis is A. Pressure half-time ÷220. This measurement helps assess the severity of stenosis.
Explanation:
In tricuspid valve stenosis, the Doppler formula used for determining tricuspid valve area (TVA) is A. Pressure half-time ÷220. This method involves measuring the time it takes for pressure in the heart's chamber to fall to half its peak value during diastole. The result is then divided by 220 to estimate the valve area, which is a useful measure for assessing the severity of stenosis. Tricuspid valve stenosis is a pathological narrowing of the tricuspid valve, leading to increased resistance to blood flow from the right atrium to the right ventricle, and can significantly impact cardiac function.
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