Mechanisms of takotsubo syndrome

Abstract

The pathogenesis of takotsubo syndrome can be considered the result of a catecholamine surge that, in predisposed and susceptible individuals, produces microvascular spasm responsible for myocardial dysfunction. The reversibility of microvascular dysfunction along with the activation of the cell survival cascade guarantees prompt and complete functional recovery in the majority of patients. Yet, about 20% of patients have serious in-hospital complications probably related to the severity of left ventricular dysfunction and/or lack of resolution. The reasons for these different outcomes are still unknown.