Abstract
Proteinuria is a strong and independent predictor of increased risk of kidney disease progression and cardiovascular morbidity and mortality. Urinary excretion of protein >150 mg a day is considered to be a marker of kidney damage and to significantly increase the risk of progression to end stage renal disease. Epidemiological studies, however, suggest that excretion of as little as 10 mg/day of protein in the urine is associated with increased risk of kidney failure. There are several methods for measuring protein or albumin excretion in the urine including the spot urine protein-to-creatinine ratio (UPCR), the urine albumin-to-creatinine ratio (UACR), the urine dipstick and the 24 h urine collection. Of these, the 24 h urine collection is considered to be the gold standard. Proteinuria may be transient or persistent. While transient proteinuria is almost always benign, persistent proteinuria may be due to several different causes including primary glomerular diseases and systemic disorders that damage the kidneys.
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Abbreviations
- AASK:
-
African-American Study of Kidney Disease and Hypertension
- ACE-I:
-
Angiotensin converting enzyme inhibitor
- AKI:
-
Acute kidney injury
- ARB:
-
Angiotensin receptor blocker
- CRIC:
-
Chronic Renal Insufficiency Cohort
- eGFR:
-
Estimated glomerular filtration rate
- ERAs:
-
Endothelin receptor antagonists
- ESRD:
-
End stage renal disease
- FSGS:
-
Focal segmental glomerulosclerosis
- MDRD:
-
Modification of Diet in Renal Disease
- NHANES:
-
National Health and Nutrition Examination Survey
- RAA:
-
Renin angiotensin aldosterone system
- RAS:
-
Renin angiotensin system
- REIN:
-
Ramipril Efficacy in Nephropathy
- UACR:
-
Urine albumin-to-creatinine ratio
- UPCR:
-
Urine protein-to-creatinine ratio
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Blaine, J. (2016). Evaluation and Epidemiology of Proteinuria. In: Blaine, J. (eds) Proteinuria: Basic Mechanisms, Pathophysiology and Clinical Relevance. Springer, Cham. https://doi.org/10.1007/978-3-319-43359-2_1
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DOI: https://doi.org/10.1007/978-3-319-43359-2_1
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