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J Extra Corpor Technol · Dec 2012
ReviewNovel biomarkers for cardiac surgery-associated acute kidney injury: a skeptical assessment of their role.
- David Sidebotham.
- Cardiovascular Intensive Care Unit, Auckland City Hospital, Auckland, New Zealand. dsidebotham@adhb.govt.nz
- J Extra Corpor Technol. 2012 Dec 1;44(4):235-40.
AbstractCardiac surgery-associated acute kidney injury (AKI) is common and is associated with a high mortality rate. Traditional biomarkers of AKI (creatinine and urea) increase slowly in response to renal injury, are insensitive to mild degrees of AKI, and are influenced by nonrenal factors. There is considerable interest in novel biomarkers of AKI such as neutrophil gelatinase-associated lipocalin that increase rapidly after renal injury, detect mild degrees of AKI, and are less subject to nonrenal factors. It has been postulated that the early diagnosis of cardiac surgery-associated AKI using novel biomarkers will result in improved outcomes. However, there is little evidence that interventions started early in the course of evolving AKI enhance renal recovery. Until effective therapies are developed that significantly improve the outcome from AKI, there is little benefit from early diagnosis using novel biomarkers.
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