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Doppler waveform features proximal to a severe stenosis with limited collaterals
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Ask by Ortiz Christensen. in the United States
Dec 17,2024

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Doppler waveform features near a severe stenosis with limited collaterals show increased peak systolic velocity, post-stenotic turbulence, high resistance waveform, delayed acceleration time, and altered waveform pattern.

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When examining Doppler waveforms proximal to a severe stenosis with limited collateral circulation, you’ll typically witness a marked decrease in the spectral waveform’s amplitude. This is due to turbulent flow caused by the narrowing, resulting in more disorganized and chaotic blood flow. You might also notice a noticeable “systolic peak” with delayed diastolic flow, indicating increased resistance downstream and further emphasizing the impact of the stenosis on hemodynamics.
In clinical practice, recognizing these changes is crucial for accurately diagnosing and managing vascular conditions. For instance, if a patient presents with symptoms of claudication or ischemia, the Doppler waveform analysis can clarify the severity of the stenosis. It helps physicians determine the most appropriate intervention, whether it’s surgical repair or endovascular options, to restore adequate blood flow to the affected area.

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