Approximately 10-20 over the course of training, depending on how motivated the fellow is to perform this procedure. All access lines for surgical patients are performed by the primary team. For patients on a medicine service (i.e. MICU or CCU), the renal fellow may defer line placements to the primary team of residents or to the interventional radiology service. Trainees with a strong interest in procedures may, therefore, choose to perform more line placements. Supervision is provided mostly from critical care faculty, though some members of the renal division are credentialed to supervise and perform line placements as well. Our institution believes in supervision for any trainee performing an invasive procedure until competence has been demonstrated and documented by these supervisors.