In nursing care, narrative emerges as mediation and a key element in the care process, which also determines an epistemological background, supported by scientific advances in the nursing sciences.Objective: To analyze the epistemological aspects: meaning, metaparadigm, nursing knowledge patterns and worldviews to a service narrative of a Renal Unit.Methodology: Hildegard Peplau's thought and the guide for the analysis of nursing situations, it were applied used at the University of Santander-UDES.Results: The "Situation of Nursing" analyzed is located in the vision of reciprocity.Patterns of nursing knowledge were identified, reflecting predominance of the aesthetic pattern. Conclusion:In the care of adults with peritoneal dialysis, and with the difficulties in accepting their recent terminal diagnosis, a humanized care is essential.