The Doppler spectral waveform from the low-resistance internal carotid artery can be characterized by
A) high peak systolic velocity and low diastolic flow.
B) rapid systolic upstroke and rapid deceleration to low diastolic flow.
C) slow systolic rise time, rapid deceleration, flow reversal in late systole, and low diastolic flow.
D) cephalad flow throughout the cardiac cycle.

Question

Quizplus · Accepted Answer

The Doppler spectral waveform from the normal ICA is characterized by rapid systolic upstroke, a blunted systolic peak, and forward diastolic flow. Flow is toward the brain (cephalad) throughout the cardiac cycle.

The Doppler Spectral Waveform from the Low-Resistance Internal Carotid Artery