CVPR Week 8: CKD Flashcards
Objectives

How to measure kidney function and assess kidney damage
EGFR and Albuminuria
What do EGFR and Albuminuria tell you?
Kidney function and assessment of kidney damage
EGFR AKA
Estimated glomerular filtration rate
Test of renal damage
protein in the urine (albuminuria)
Test of renal function
EGFR
How to calculate EGFR

GFR vs eGFR

When not to use creatinine-based estimates of kidney function
- in AKI when creatinine levels can be rapidly changing
- extremes of muscle mass, body size or altered diet patterns
- medications that interfere with the measurement of serum creatinine
Examples of medications that interfere with the measurement of serum creatinine
- Trimethoprim
- vitamin D analogs
- Tenofovir
Different eGFR estimating equations

What is Cystatin-C?
a novel measure of renal function
Cystatin-C vs Creatinine
estimating equations have been developed to use Cys-C alone or with SCr but creatinine and Cys-C don’t always agree
Describe the physiologic basis of proteinuria/albuminuria

How is CKD screened for?

Normal to mildly increased albuminuria: 24-hour excretion
<30 mg/day
Normal to mildly increased albuminuria: timed urine specimen
<20 ug/min
Normal to mildly increased albuminuria: spot urine albumin/creatinine ratio (ADA)
< 30 mg/g
Normal to mildly increased albuminuria: Spot urine albumin/creatinine ratio (gender specific) (K/DOQI)
<17 mg/g (men)
<25 mg/g (women)
Moderately increased albuminuria: Spot urine albumin/creatinine ratio (gender specific) (K/DOQI)
17-250 (men)
25-355 (women)
Moderately increased albuminuria: Spot urine albumin/creatinine ratio (ADA)
20-300 mg/g
Moderately increased albuminuria: Spot urine albumin-specific dipstick (screening)
>3 mg/dL
Moderately increased albuminuria: Timed urine specimen
20-200 ug/min
Moderately increased albuminuria: 24-hour excretion
30-300 mg/day










































