Final answer:
The nurse is practicing primary nursing, a model where one nurse takes comprehensive responsibility for a caseload of patients over time, ensuring continuity of care.
Step-by-step explanation:
The nurse mentioned in the question is practicing primary nursing. In a primary nursing model, a registered nurse (RN) assumes responsibility for a caseload of patients over a period of time. This involves direct supervision and care of the patients, which includes reviewing each patient's history and current condition, assessing and responding to needs before and during treatments, and ensuring that procedures like dialysis treatments are conducted accurately and under sterile conditions. The primary nursing model emphasizes continuity of care, with one nurse being accountable for the overall management and outcomes of care for their patients.