Inclusion Criteria:  Patient indicated by investigator for catheter ablation or diagnostic electrophysiology procedure. Male or non-pregnant female aged ≥18 years. Female patients of childbearing potential must have a negative pregnancy test (per site standard test) within 7 days prior to index procedure. Able and willing to directly provide informed consent.  Exclusion Criteria:  Patient inability to understand or refusal to sign informed consent. Pregnant or nursing patients and those who plan pregnancy in the period up to 1 month following the index procedure. Current participation in another investigational drug or device study that interferes with this study. Patient is a prisoner. Patients who in the opinion of the physician are not candidates for this study. Prior atrial septal defect (ASD) or patent foramen ovale (PFO) closure with a device using a transcatheter percutaneous approach.