RT Journal Article T1 Hematuria Is Associated with More Severe Acute Tubulointerstitial Nephritis. A1 Esteras, Raquel A1 Fox, Jonathan G A1 Geddes, Colin C A1 Mackinnon, Bruce A1 Ortiz, Alberto A1 Moreno, Juan Antonio K1 acute kidney injury K1 acute tubulointerstitial nephritis K1 chronic kidney disease K1 haematuria K1 kidney biopsy K1 outcomes K1 proteinuria AB Acute tubulointerstitial nephritis (ATIN) is a common cause of acute kidney injury. Although haematuria is a risk factor for the development of renal disease, no previous study has analyzed the significance of haematuria in ATIN. Retrospective, observational analysis of 110 patients with biopsy-proven ATIN was conducted. Results: Haematuria was present in 66 (60%) ATIN patients. A higher percentage of ATIN patients with haematuria had proteinuria than patients without haematuria (89.4% vs. 59.1%, p = 0.001) with significantly higher levels of proteinuria (median (interquartile range) protein:creatinine ratio 902.70 (513-1492) vs. 341.00 (177-734) mg/g, p SN 2077-0383 YR 2020 FD 2020-07-07 LK https://hdl.handle.net/10668/28317 UL https://hdl.handle.net/10668/28317 LA en DS RISalud RD Apr 17, 2025