Introduction: Acute kidney injury on dialysis has high mortality in hospitalized patients especially in ICU and there are no updatedstudies in our country. Objectives: To describe characteristics of acute kidney injured patients on dialysis at a general hospital. Design:Descriptive single center observational study. Setting: Hospital Nacional Dos de Mayo, Lima, Peru. Patients: Acute kidney injured (AKI)patients on dialysis. Interventions: We studied patients with AKI on dialysis from January to December, 2012. We described averages,percentages, standard deviations. Main outcome measures: Clinical characteristics of patients with AKI on dialysis. Results: Forty-threeacute kidney injured cases on dialysis were reported. Average age was 58.5 years (SD: 16.6), 28 were male, 20 patients (46.5%) werefrom ICU. The main cause of dialysis admission was oligoanuria (60.5%) followed by uremic encep...