ABSTRACT
Introduction Definition Nomenclature in syncope Scope of the problem Pathophysiology Cerebral autoregulation Causes and clinical features of transient loss of consciousness (TLOC) True syncope Non-syncopal conditions (syncope mimics)
INTRODUCTION Syncope is a common clinical problem both in the outpatient and the in-
hospital setting.1 It has been estimated that approximately one-third of individuals experience a syncopal episode during their lifetime,2 with a 30% recurrence rate.3
