[Seroprevalence of Chagas disease at the Instituto Nacional de Cardiología Ignacio Chávez from 2004 to 2010].

Background: Different pathogens can cause dilated cardiomyopathy, one of them is Trypanosoma cruzi protozoan. T.cruzi-chronic infection causes chronic Chagasic cardiomyopathy and affects the sinus node and the conduction systembelow the bundle of His; besides, it shows excellent arrhythmogenic potential because of ventricular arrhythmias.