What is the normal range for mitral valve PHT?

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Prepare for the Ultrasound Registry Review (URR) MV Abnormalities and Disease Test. Enhance your studies with quizzes, flashcards, and detailed explanations. Pass your exam with confidence!

Multiple Choice

What is the normal range for mitral valve PHT?

Explanation:
Mitral valve pressure half-time (PHT) reflects how quickly the diastolic pressure gradient across the mitral valve decays as the ventricle fills. In a normal valve, the gradient falls relatively quickly, so PHT sits in a short, safe range. The normal PHT is about 30 to 90 milliseconds, which corresponds to a typical mitral valve area around 4–6 cm². If PHT extends beyond about 90 ms, it suggests a reduced valve area (mitral stenosis) and a smaller MVA; if PHT is very short (below about 30 ms), it would imply an abnormally large valve area or potential measurement issues. So the normal range is 30–90 ms.

Mitral valve pressure half-time (PHT) reflects how quickly the diastolic pressure gradient across the mitral valve decays as the ventricle fills. In a normal valve, the gradient falls relatively quickly, so PHT sits in a short, safe range. The normal PHT is about 30 to 90 milliseconds, which corresponds to a typical mitral valve area around 4–6 cm². If PHT extends beyond about 90 ms, it suggests a reduced valve area (mitral stenosis) and a smaller MVA; if PHT is very short (below about 30 ms), it would imply an abnormally large valve area or potential measurement issues. So the normal range is 30–90 ms.

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