AdvisaTM IPG Clinical Evaluation Study

Inclusion Criteria: * Patients who have an IPG indication for implantation of a dual chamber pacemaker. * Patients who are geographically stable and available for follow-up at the study center for the duration of the study. * Patients who have signed a Medical Ethics Committee (MEC) approved Informed Consent form. Exclusion Criteria: * Patients with a life expectancy less than the duration of the study. * Patients with a Class III indication for permanent pacing according to ACC/AHA/NASPE 2002 guidelines. * Patients with medical conditions that preclude the testing required for all patients by the study protocol or that otherwise limit study participation required for all patients.