Posts tagged "orthostatic intolerance"

The Baroreflex: The Blood-Pressure Thermostat the Vagus Runs — and What Breaks in POTS

Every time you stand, gravity yanks blood toward your feet and your blood pressure should drop — but usually it doesn't, because a reflex loop catches it within a single heartbeat. That loop is the baroreflex, and the vagus runs half of it. In POTS, the loop's gain is off, so instead of a smooth catch, your heart races.