One-year cardiac morphological and functional evolution following permanent pacemaker implantation in right ventricular septal position in chagasic patients.

Introduction: The septal position is an alternative site for cardiac pacing (CP) that is potentially less harmful to cardiac function.

Methods: Patients with Chagas disease without heart failure submitted to permanent pacemaker (PP) implantation at the Clinics Hospital of the Triângulo Mineiro Federal University (UFTM), were selected from February 2009 to February 2010. The parameters analyzed were ventricular remodeling, the degree of electromechanical dyssynchrony (DEM), exercise time and VO2 max during exercise testing (ET) and functional class (NYHA).