Follow-up Period: Subjects will be followed for a period of 2 years from the date of randomization. Prospective data will be collected on (1) all subsequent access procedures (angioplasty, thrombectomy, surgical revision, or placement of dialysis catheter), (2) all access-related hospitalizations (those due to an access complication or non-access related hospitalizations in which an access procedure is performed), and (3) all access-related complications, e.g., catheter-related bacteremia or metastatic infections.