Pulsed Wave Doppler Ultrasound Is Useful to Assess Vasomotor Response in Patients with Multiple System Atrophy and  Well Correlated with Tilt Table Study

<table>Change of Doppler wave forms upon sympathetic vasomotor response (SVR). The inspiratory cough causes an artifact (arrow) and decreases systolic blood velocity with a more prominent diastolic reversal. The wave of maximal deflection (arrowhead) was used to represent the hemodynamic status after sympathetic stimulation. The SVR latency indicated the period between the artifact by inspiratory cough to the maximal deflection of Doppler wave forms.</table>

The Scientific World Journal

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Figure 1

Figure 1: Pulsed Wave Doppler Ultrasound Is Useful to Assess Vasomotor Response in Patients with Multiple System Atrophy and  Well Correlated with Tilt Table Study 

Figure 1 | Pulsed Wave Doppler Ultrasound Is Useful to Assess Vasomotor Response in Patients with Multiple System Atrophy and  Well Correlated with Tilt Table Study 