Acute Kidney Injury (AKI) is a common and serious condition in hospitalized patients, especially when it reaches stages 2 or 3 according to the KDIGO classification. These severe forms are associated with high mortality, a risk of progression to chronic kidney disease (CKD), and frequent cardiovascular complications. However, current data on how nephrologists manage these patients during hospitalization-and how these practices influence long-term outcomes-are limited and heterogeneous. The FAKIR study (French AKI Registry) is a prospective, multicenter, non-interventional observational study designed to describe the clinical management of patients admitted to nephrology departments for AKI stage 2 or 3 and to assess their renal and cardiovascular outcomes up to one year. The study hypothesizes that better characterization of in-hospital practices and patient trajectories will help identify predictors of renal recovery, progression to end-stage renal disease, and major cardiovascular events. Patients will be followed during hospitalization and at 3, 6, and 12 months to assess renal function, mortality, cardiovascular events, and rehospitalizations. This registry aims to provide real-life, multicenter data to support future guidelines and the development of structured post-AKI care pathways.
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Rate of Complete Renal Recovery at 3 Months After Hospitalization for AKI KDIGO Stage 2 or 3
Timeframe: Assessed at 3 months (±30 days) after admission for AKI in nephrology ward