Figure 1.

Autonomic test response evaluation for the diagnosis of orthostatic dysautonomic hypotension. (A) Resting autonomic responses (left) versus tilt test lines (right). (B) Basal autonomic responses versus tilt-test lines regarding autonomic responses (left) versus tilt-test (right). HR, heart rate; mBP, mean blood pressure; SV, stroke volume; CO, cardiac output; TPR, total peripheral resistance; RRI, R-R interval; dBP, diastolic blood pressure; LFnu-dBP, low frequency diastolic blood pressure in normalized units; HFnu-RRI, high-frequency R-R interval in normalized units; LF/HF, heart rate variability in the frequency domain with a low frequency/high frequency ratio obtained in the basal period and in an orthostatic inclination of 70°; BRS, baroreflex sensitivity.