Which waveform characteristic on a peripheral arterial Doppler study is most indicative of a hemodynamically significant proximal stenosis?
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A
Triphasic waveform with sharp systolic peak
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B
Monophasic waveform with prolonged systolic upstroke and absent diastole
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C
Biphasic waveform with high-amplitude reverse flow
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D
Multiphasic waveform with rapid upstroke