Improve of arrhythmogenic right ventricular cardiomyopathy/dysplasia evaluation by magnetic resonance using ventricular arrhythmia suppression with intravenous lidocaine

Background New recommendations from task force criteria for the diagnosis of arrhythmogenic right ventricular cardiomyopathy/dysplasia (ARVC/D) include regional right ventricle (RV) akinesia or dyskinesia or dyssynchronous RV contraction associated to RV dilatation or RV dysfunction evaluated by magnetic resonance imaging (MRI) as major diagnostic criteria. However the frequent presentation of ventricular arrhythmias during the acquisition of MRI results in significant limitations in the evaluation of these images. Lidocaine has been used clinically in the suppression of ventricular arrhythmias. Objetctive: we used lidocaine to attempt ventricular arrhythmias suppression during MRI acquisition in order to improve the quality images to assessment of function and focal segmental contractility of RV in the evaluation of patients with ARVC/D suspected.