35 lines
1.6 KiB
Markdown
35 lines
1.6 KiB
Markdown
# CockCroft Gault Equation
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### CockCroft Gault Equation is an equation which is used to calculate the CrCl (Creatinine Clearance) of a patient
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### Unit:- mL/min
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#### It takes the following parameters
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| Parameter | Range | unit |
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| --------- | ----- | ---- |
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| Age | 18-95 | - |
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| Serum Creatinine | 0.2 - 20 | mg/dL |
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| weight | 10 - 100 | kg |
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| Gender | - | - |
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### Formula
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#### It uses the following formula to calculate the CrCl
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$$
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CrCl = \frac{(140 - Age)}{(72 \times S. Creatinine)} \times 0.85 \text{(if patient is female)}
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$$
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## Interpretation
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#### GFR can be interpreted by using the following table
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| Range of GFR | Stage | Message |
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| ------------ | ----- | ------------------ |
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| more than 90 mL/min | CKD Stage 1 | Renal Function is normal |
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| 60 - 90 mL/min | CKD Stage 2 | Renal Function is slightly reduced |
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| **45 - 60 mL/min** | **CKD Stage 3A** | **Renal Function is moderately reduced** |
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| **30 - 45 mL/min** | **CKD Stage 3B** | **Renal Function is significantly reduced** |
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| **15 - 30 mL/min** | **CKD Stage 4** | **Renal Function is largely reduced** |
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| **less than 15 mL/min** | **CKD Stage 5 / ESRD** | **Renal Function is severely reduced** |
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### Notice:-
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#### This equation of calculating Creatinine Clearance is not as accurate, other equations like MDRD and CKD-EPI are recommended. Equation is not reliable in the cases of AKI (Acute Kidney Injury). Consultation with a Nephrologist is always recommended. No diagnosis should be made just on the basis of a medical calculator. Other clinical clues are to be taken into account (Urinalysis, UACR(Urine Albumin to Creatinine Ratio) etc.)
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