Postural hypotension.
D001794:Blood Pressure; D005246:Feedback; D006339:Heart Rate; D006801:Humans; D007024:Hypotension, Orthostatic / Q000209:etiology / Q000503:physiopathology; D009638:Norepinephrine / Q000502:physiology; D011311:Pressoreceptors / Q000502:physiology; D013564:Sympathetic Nervous System / Q000502:physiology; D014661:Vasoconstriction
D009638:Norepinephrine