Journal
CLINICAL JOURNAL OF THE AMERICAN SOCIETY OF NEPHROLOGY
Volume 4, Issue 5, Pages 891-898Publisher
AMER SOC NEPHROLOGY
DOI: 10.2215/CJN.05571008
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Funding
- NIDDK NIH HHS [R01 DK067126, R01 DK67126] Funding Source: Medline
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Background and objectives: Relatively little is known about clinical outcomes, especially long-term outcomes, among patients who have chronic kidney disease (CKD) and experience superimposed acute renal failure (ARF; acute on chronic renal failure). Design, setting, participants, & measurements: We tracked 39,805 members of an integrated health care delivery system in northern California who were hospitalized during 1996 through 2003 and had prehospitalization estimated GFR (eGFR) <45 ml/min per 1.73 m(2). Superimposed ARF was defined as having both a peak inpatient serum creatinine greater than the last outpatient serum creatinine by >= 50% and receipt of acute dialysis. Results: Overall, 26% of CKD patients who suffered superimposed ARF died during the index hospitalization. There was a high risk for developing ESRD within 30 d of hospital discharge that varied with preadmission renal function, being 42% among hospital survivors with baseline eGFR 30-44 ml/min per 1.73 m(2) and 63% among hospital survivors with baseline eGFR 15-29 ml/min per 1.73 m(2). Compared with patients who had CKD and did not experience superimposed ARF, those who did had a 30% higher long-term risk for death or ESRD. Conclusions: In a large, community-based cohort of patients with CKD, an episode of superimposed dialysis-requiring ARF was associated with very high risk for nonrecovery of renal function. Dialysis-requiring ARF also seemed to be an independent risk factor for long-term risk for death or ESRD. Clin J Am Soc Nephrol 4: 891-898, 2009. doi: 10.2215/CJN.05571008
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