期刊
BMJ OPEN
卷 7, 期 3, 页码 -出版社
BMJ PUBLISHING GROUP
DOI: 10.1136/bmjopen-2016-015316
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资金
- Kidney Research UK [RP13/2015, RP5/2013] Funding Source: researchfish
Objectives: Using a prospective study design, we aimed to characterise the effect of acute kidney injury (AKI) on long-term changes in renal function in a general hospital population. Participants: Hospitalised patients with AKI (exposed) and hospitalised patients without AKI (non-exposed), recruited at 3 months after hospital admission. Design: Prospective, matched parallel group cohort study, in which renal function and proteinuria were measured at 3 months, 1 year and 3 years. Setting: Single UK centre. Clinical end points: Clinical end points at 3 years were comparison of the following variables between exposed and non-exposed groups: renal function, prevalence of proteinuria and albuminuria and chronic kidney disease (CKD) progression/development at each time point. CKD progression was defined as a decrease in the estimated glomerular filtration rate (eGFR) of >= 25% associated with a decline in eGFR stage. Results: 300 exposed and non-exposed patients were successfully matched 1: 1 for age and baseline renal function; 70% of the exposed group had AKI stage 1. During follow-up, the AKI group had lower eGFR than non-exposed patients at each time point. At 3 years, the mean eGFR was 60.7 +/- 21 mL/min/1.73 m(2) in the AKI group compared with 68.4 +/- 21 mL/min/ 1.73 m(2) in the non-exposed group, p=0.003. CKD development or progression at 3 years occurred in 30 (24.6%) of the AKI group compared with 10 (7.5%) of the non-exposed group, p<0.001. Albuminuria was more common in the AKI group, and increased with AKI severity. Factors independently associated with CKD development/progression after AKI were nonrecovery at 90 days, male gender, diabetes and recurrent AKI. Conclusions: AKI is associated with deterioration in renal function to 3 years, even in an unselected population with predominantly AKI stage 1. Nonrecovery from AKI is an important factor determining long-term outcome.
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