Key Words: PCU Nurse, RN-Progressive Care, Telemetry Nursing positions, Step-down, Stepdown, Travel Nurse, Contract Nurse, Agency Nurse, EKG, Tele, Telemetry Contracts, Registered Nurse, Telemetry Nurse, Tele Nurse, RN, Registered Nurse, Telemetry Nurse, RN-Tele, Travel Nursing. Many PCU patients receive complex medications that may require titration based on the patient’s vital signs The PCU nurse is sometimes also called a step-down nurse and the PCU is also known as cardiac step-down, medical step-down, neuro step-down, surgical step-down and ER holding.