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Examples of blood pressure (BP) and heart rate recordings from a normal subject (top panel), a patient with neuropathic POTS (middle panel), and a patient with hyperadrenergic POTS (bottom panel). Note the modest reduction in BP in neuropathic POTS. Hyperadrenergic POTS is associated with prominent BP oscillations, an orthostatic increment in systolic BP, and a prominent norepinephrine response to head-up tilt.
