View clinical trials related to Heart Block.
Filter by:This study is a long-term, prospective, and controlled evaluation of the mechanical dyssynchrony induced by right ventricular apical pacing, both in acute (spontaneous and stimulated) and chronic (12 and 24 months); the study also evaluates the benefit of an alternative pacing site through measures of dyssynchrony in acute and chronic.
This study is to determine 1) the incidence of altered right bundle conduction, including CRBBB, IRBBB or rsR’ pattern in the Taipei city based on the school survey databank from 1999 to 2002, 2) the associated cardiac lesions, 3) clinical presentations relevant to the altered right bundle conduction, 4) the association with QTc prolongation and dispersion and HRV from a 5-minutes recording. Finally, molecular characterization for those with CRBBB or Brugada pattern EKG, especially those with positive family history will be studied.