Abstract
Resistant Arterial Hypertension (RAH) is a complex and multifactorial syndrome, with hyperactivity of the Sympathetic Nervous System (SNS) and reduction of vagal activity being considered some of the main causes of refractoriness to treatment. Seen from the outside, it resembles a complicated (see lat. "Cum plicate") or complex disease (see lat. "Cum plexus"), Chaotic with the participati…