The risk factors for death were injury of nonrenal organs (OR=14.29; CI 95%: 2.86 - 71.40; p< 0.001), especially respitarory failure with ventilation (OR= 32; CI 95%: 7.16 - 142.98; p<0.001) and AKI needed dialysis (OR= 8.33; CI 95%: 1.66 - 41.89; p=0.004) Conclusions: Characteristics of infectious diseases in AKI associated sepsis in the elderly were ferver 78.79%; mild leukocytosis 14.52±7.71.