Alternative sites for right ventricular pacing in Chagas disease: a comparative study of the mid-septum and inflow tract.

Background: The right ventricular mid-septum and inflow tract are alternative pacing sites that are potentially less harmful to cardiac function.

Objective: This study aimed to analyze the influence of these two alternative pacing sites on the clinical course of patients with chronic Chagas disease, who underwent definitive pacemaker implantation.

Methods: A total of 80 patients with Chagas disease and classical indications for definitive pacemaker implantation were randomized into two groups between October 2008 and August 2010: 40 received inflow tract implantation and 40 patients received mid-septum implantation.

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).

Mortality indicators among chronic Chagas patients living in an endemic area.

Background: Chagas disease is a serious social-medical problem in Latin American countries because of its high incidence, morbidity and mortality. Our aim was to identify, from demographic, personal history, clinical and electrocardiographic variables, those that might have independent prognostic value regarding mortality, among a population of chronic Chagas patients from a single endemic area where vector transmission has been halted.

Methods And Results: Over a mean of 18.