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Figure 3 Vasomotor function in response to isoproterenol. (A) Percentage change in systolic, diastolic and mean blood pressure (BP) and total peripheral resistance during isoproterenol infusion in supine position compared with baseline supine position. (B) Percentage change in systolic, diastolic and mean blood pressure and total peripheral resistance during isoproterenol infusion from supine to tilt position. **p < 0.01; ***p < 0.001.