Chronic renal failure classification
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Feham Tariq, MD [2]
Overview
The aim of chronic kidney disease (CKD) staging is to guide management, stratifying the risk of progression and complications of CKD. Risk stratification is used as a guide to inform appropriate treatments and the intensity for monitoring and patient education. In patients who are diagnosed with CKD, staging is done according to glomerular filtration rate (GFR) and albuminuria.
Classification
The aim of chronic kidney disease (CKD) staging is to guide management, stratifying the risk of progression and complications of CKD. Risk stratification is used as a guide to inform appropriate treatments and the intensity for monitoring and patient education. In patients who are diagnosed with CKD, staging is done according to glomerular filtration rate (GFR) and albuminuria.
Chronic kidney disease classification based upon glomerular filtration rate and albuminuria:
GFR stages | GFR(mL/min/1.73 m2) | Terms |
G1 | ≥90 | Normal or high |
G2 | 60 to 89 | Mildly decreased |
G3a | 45 to 59 | Mildly to moderately decreased |
G3b | 30 to 44 | Moderately to severely decreased |
G4 | 15 to 29 | Severely decreased |
G5 | <15 | Kidney failure (add D if treated by dialysis) |
Albuminuria stages | AER(mg/day) | Terms |
A1 | <30 | Normal to mildly increased (may be subdivided for risk prediction) |
A2 | 30 to 300 | Moderately increased |
A3 | >300 | Severely increased (may be subdivided into nephrotic and non-nephrotic for differential diagnosis, management, and risk prediction) |
- Based on the duration of symptoms, [disease name] may be classified as either acute or chronic.
OR
- If the staging system involves specific and characteristic findings and features:
- According to the [staging system + reference], there are [number] stages of [malignancy name] based on the [finding1], [finding2], and [finding3]. Each stage is assigned a [letter/number1] and a [letter/number2] that designate the [feature1] and [feature2].
OR
- The staging of [malignancy name] is based on the [staging system].
OR
- There is no established system for the staging of [malignancy name].