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Beat to beat blood pressure (mmHg), and cerebral oxygen saturation (%) in the upper panel with heart rate (beats/min) depicted in red in the lower panel during head-up tilt in a representative patient with (A) classical orthostatic hypotension, woman, 50 years; (B) delayed orthostatic hypotension leading to an onset of vasovagal reflex and syncope, man, 80 years.
