Acute Kidney Injury (AKI) is frequent in hospitalized patients. Due to the variability of operational definitions, epidemiological characteristics of this disease are not known. In March 2012, the Clinical Practice Guideline for AKI of the International Society of Nephrology establishes three criteria that define AKI based on the RIFLE and AKIN schemes providing uniform and standard diagnostic criteria for definition. Objective: To describe the clinical and epidemiological characteristics of Acute Renal Injury in patients of Medicine Department in Hospital Regional Docente de Trujillo (HRDT). Method: A descriptive, prospective, developed at Hospital Regional Docente de Trujillo - Department of Medicine: Medicine A, B and C during the period November 2013 - May 2014. Information from the medical records of 113 patients was obtained. Results: The frequency of Acute Renal Injury in Medicine...