Clinical and pathological features of acute kidney injury in children

Objective: Based on the diagnostic and staging criteria of acute kidney injury (AKI), we analyze the clinical and pathological characteristics of children at different stages of AKI and explored their clinical significances. Methods: 165 children with AKI were divided into stage 1, stage 2, and stage 3 groups. Clinical and pathologic characteristics of AKI children were analyzed. Results: The three groups of patients showed significant differences in age, etiology, pathological damage, and the median recovery time of serum creatinine. Of the 165 patients, the incidence and duration of hematuria showed significant differences among the three groups, and the stage 1 group showed longer duration of proteinuria. Conclusion: The patients were largely in stage 1 and 3. The children with AKI in stage 1 were largely school-age children and acute glomerulonephritis (AGN) was the main etiology. The AKI children in stage 3 were mainly infants, of which the etiology was mainly drugs and septicemia. The pathological type was mainly acute tubulointerstitial nephritis, and the renal function recovery was slow.