Normal spectral Doppler waveform in a high resistance artery

Normal spectral Doppler waveform in a high resistance artery

Flow within arteries supplying structures with variable flow demands, such as the extremities at rest and the bowel during fasting, have higher resistance triphasic waveforms. These waveforms are characterized by narrow systolic peaks, followed by an abrupt transition between systole and diastole with transient reversal of diastolic flow, and then a return of low-level forward flow during the rest of diastole

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