CURRENT TRENDS IN ETIOLOGY, DIAGNOSIS, AND MANAGEMENT OF NEUROCARDIOGENIC SYNCOPE

Recurrent episodes of unexplained syncope are among the most frequent of complaints referred to physicians for evaluation. Traditional metho ds of evaluation were both time consuming and expensive and left many patients without a diagnosis. Although neurocardiogenically mediated e pisodes of hypotension and bradycardia were felt to be a common cause of syncope, this was traditionally a diagnosis of exclusion. The emerg ence of head-upright tilt-table testing has provided a valuable method for identifying individuals predisposed to neurocardiogenic syncope a nd has also allowed for a better understanding of this phenomena. This article reviews the pathophysiology of neurocardiogenic syncope, the use of head-upright tilt-table testing in its diagnosis, and the poten tial therapies used to prevent recurrences.