Abstract:Objective To analyze the related factors of death after acute kidney injury (AKI) in hospitalized elderly patients. Methods The clinical data of 513 inpatients with super-aged patients admitted to our hospital from January 2016 to January 2018 were retrospectively analyzed. Among them, 200 patients developed acute kidney injury during hospitalization. Within 12 months after discharge, 67 patients died and 133 patients survived. Death causes of the patient were analyzed, and the single factor and Logistic multivariate analysis were used to analyze the factors associated with death after AKI in hospitalized patients. Results Sepsis, shock, cardiac insufficiency and nephrotoxic drugs were the main causes of death. Univariate analysis showed age, body mass index (BMI), underlying disease, AKI etiology, glomerular filtration rate (eGFR), creatinine (Scr), mean arterial pressure, mechanical ventilation, urine volume < 0.05?ml/(kg?h), differences of AKI, AKI type and AKI stage were statistically significant (P?0.05). Patients in the death group had higher age, lower BMI, higher incidence of hypertension, hypotension and hyperuricemia than the surviving group, high incidence of AKI due to infection, low incidence of AKI due to nephrotoxic drugs, high eGFR levels. When AKI occurs, mean arterial pressure was low; mechanical ventilation and urine volume 0.05?ml/(kg?h) had high incidence; and uric acid, Scr peak, Scr, urea nitrogen, blood calcium and phosphorus levels were high; the level of serum prealbumin, hemoglobin, blood magnesium was low; the most incidence of AKI was continuous, mostly in stage III patients; and the hospital stay was long. Logistic multivariate analysis showed that advanced age, hypotension, infection, low mean arterial pressure, urine output 0.05?ml/(kg?h), elevated urea nitrogen, decreased serum prealbumin, high AKI stage, and long hospital stay were risk factors of death after AKI in elderly hospitalized patients (P?0.05). Conclusions Advanced age, hypotension, infection, mean arterial pressure reduction, urine output <0.05?ml/(kg?h), elevated urea nitrogen, serum prealbumin reduction, high AKI staging, long hospital stay are risk factors of death for elderly hospitalized patients with AKI, and such patients should be monitored in the clinic to improve patient survival.