Clinical phase of Chagas disease (CD) and reasons for visit.

aPAPPS: Preventive Activities and Health Promotion Program.bOf the 22 patients diagnosed with CD, one failed to complete the tests.cDysphagia dating from >1 year earlier.dLongstanding palpitations and dysphagia.eOne case with right bundle Branch block, and other with a T-wave inversion in inferior leads.fOne case: right bundle branch block associated with left anterior hemiblock and hypotonia of the lower esophageal sphincter. Second case: right bundle branch block with severe hypotonia of the lower esophageal sphincter and distal esophageal hypoperistalsis.