Abstract
The prevalence of elderly individuals continues to increase over time, as does the incidence of acute kidney injury (AKI). However, it is not known whether age is an important prognostic predictor for renal recovery after an episode of AKI. Systematic review of MEDLINE and EMBASE databases and meta-analysis of pooled data using random-effect models. Adults with AKI, not including kidney transplant recipients. Studies published in English between 2000 and 2007 were eligible for this analysis if they met the following inclusion criteria: (1) clear definition of AKI and recovery of kidney function, (2) assessment of kidney function recovery as the primary or secondary outcome, and (3) participant age reported. We contacted the investigators of studies and requested data for recovery of kidney function by patient age. Patient age of 65 years and older and younger than 65 years. Recovery of kidney function defined as independence from dialysis therapy, decrease in serum creatinine level to less than a defined threshold, or return to baseline kidney function. We obtained data for recovery of kidney function by age from 17 studies of patients with AKI. Overall, 31.3% of surviving elderly patients did not recover kidney function compared with 26% of younger patients (pooled relative risk, 1.28, 95% confidence interval, 1.06 to 1.55; P < 0.05). The increased risk of nonrecovery in the elderly remained greater in several subgroups examined through sensitivity analyses, including those stratified by type of dialysis support, time of assessment of recovery (short versus long term), and definition of renal recovery. There was significant heterogeneity among studies with respect to comorbid factors, definition of AKI, and study design. There is impaired recovery of kidney function after AKI in aged individuals. Future studies should be cognizant of "age" as a potential effect modifier in the prognosis after AKI, and clinical trials should focus on improving outcomes in the elderly cohort.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
