Local Passive Heat for the Treatment of Hypertension in Autonomic Failure

Supine hypertension affects a majority of patients with autonomic failure; it is associated with end-organdamage and can worsen daytime orthostatic hypotension by inducing pressure diuresis and volume loss during the night. Because sympathetic activation prevents blood pressure (BP) from falling in healthy subjects exposed to heat, we hypothesized that passive heat had a BP-lowering effect in patients with autonomic failure and could be used to treat their supine hypertension.

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