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Top 10 Takeaways on Evaluation for Primary Care Physicians from the KDIGO 2024 Clinical Practice Guideline for the Evaluation and Management of Chronic Kidney Disease
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Top 10 Takeaways on Evaluation for Primary Care Physicians from the KDIGO 2024 Clinical Practice Guideline for the Evaluation and Management of Chronic Kidney Disease

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  • June 21, 2024
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  • 2023/2024
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Top Top 10 Takeaways on Evaluation for Primary Care
Physicians from the KDIGO 2024 Clinical Practice

10 Guideline for the Evaluation and Management of
Chronic Kidney Disease
Promote participation in high-quality research in CKD across the lifespan
Figure 1




1
CKD definition Physical
exam
CKD is defined as abnormalities of kidney structure or function, present Symptoms and signs
Nephrotoxic
for >3 months, with implications for health. Usually, damage is assessed medications
of urinary tract
by the urine albumin (ACR) and function by GFR, but there are also other abnormalities
markers of kidney damage (Figure 1).
Medical Social and
history environmental
history




2
CKD categorization Symptoms and signs
Obtain careful family history
for possible genetic causes,
CKD is categorized based on 2 dimensions (i.e., GFR and ACR), however, of systemic diseases
including family pedigree for CKD
CKD is classified based on Cause, GFR category (G1–G5), and Albuminuria
category (A1–A3). Laboratory tests, imaging, and tissue sample, such as:
• Urinalysis and urine sediment • Ultrasound
• Urine albumin-to-creatinine ratio • Kidney biopsy
• Serologic tests • Genetic testing




3
Diagnosis of CKD after acute kidney injury (AKI)
In patients who have recovered from AKI, the diagnosis of CKD should
wait for 3 months after discharge.

Figure 2
Age 65+ ACR, mg/g ACR, mg/g




4
eGFRcr-cys <10 10–29 30–299 300+ <10 10–29 30–299 300+

Diagnosis of CKD in older adults 105+ 1.2
All-cause mortality
1.4 1.9 3.5 0.97
Myocardial infarction
1.4 2.0 19
The threshold for CKD should be GFR <60 ml/min/1.73 m2 in older adults, 90–104 ref 1.2 1.4 2.0 ref 1.2 1.1 1.9
60–89 1.2 1.5 1.8 2.3 1.1 1.4 1.5 1.9
even if they do not have significant albuminuria (ACR <30 mg/g). Epidemi- 45–59 1.6 2.0 2.4 2.9 1.6 1.9 2.3 3.4
ologic data demonstrate that there are higher risks for myriad adverse 30–44 2.0 2.4 3.2 4.1 2.1 2.6 3.1 3.8
outcomes below a GFR <60 (Figure 2). <30 3.4 4.1 5.1 6.5 4.9 3.0 5.1 5.0
Cardiovascular mortality Stroke
105+ 1.1 1.5 2.0 12 1.2 1.3 1.5 3.3
90–104 ref 1.4 1.4 3.4 ref 1.3 1.3 2.8
60–89 1.2 1.7 2.2 3.1 1.1 1.4 1.8 2.5




5
45–59 1.7 2.4 3.0 4.3 1.5 1.7 2.0 2.3
Improving accuracy of GFR assessment 30–44 2.4 3.1 4.5 5.8 1.5 2.0 2.1 2.3
<30 5.7 5.2 5.1 7.8 1.7 2.0 2.4 4.8
Estimating GFR from a combination of creatinine and cystatin C Kidney failure replacement therapy Heart failure
(eGFRcr-cys) improves accuracy and strengthens risk relationships. When 105+ 2.0 1.0 2.1 0.99 1.5 1.7 7.0
you are uncertain about creatinine, obtain eGFRcr-cys or eGFRcys in your 90–104 ref 1.9 4.7 10 ref 1.3 1.5 2.2
60–89 1.4 2.6 6.2 19 1.2 1.5 2.0 3.2
patients. 45–59 3.7 7.9 16 42 1.6 2.0 2.9 4.1
30–44 14 14 46 137 2.3 2.9 3.5 6.1
<30 87 364 241 406 4.4 4.1 5.5 7.2
Acute kidney injury Atrial fibrillation




6
Fluctuations in eGFR and urine albumin 105+ 0.91 1.1 1.3 1.9 0.95 1.1 1.0 3.7
90–104 ref 1.3 1.4 3.9 ref 1.2 1.3 2.4
Both eGFR and urinary albumin have random fluctuations that can cause 60–89 1.5 2.1 2.7 4.7 1.1 1.2 1.5 2.0
changes that have no clinical importance. However, changes in eGFR 45–59 3.6 4.3 5.1 7.3 1.2 1.4 1.7 1.9
30–44 5.7 5.9 7.2 9.8 1.5 1.8 2.0 2.2
beyond ±20% are likely to be caused by actual changes in kidney
<30 10 11 11 22 1.8 1.8 2.2 3.2
function. For urine albumin, reductions beyond 50% or elevations Hospitalization Peripheral artery disease
beyond 100% are probably beyond the random fluctuations. 105+ 1.0 1.1 1.2 2.2 1.1 2.3 2.9 4.9
90–104 ref 1.1 1.3 1.4 ref 1.3 2.0 4.8
60–89 1.1 1.2 1.3 1.5 1.3 1.6 2.0 3.2
45–59 1.2 1.2 1.4 1.6 2.0 2.8 3.1 3.1




7
30–44 1.5 1.4 1.6 2.0 3.5 2.8 3.8 5.9

Use a validated GFR estimating equation <30 1.9 1.9 2.0 2.6 8.4 4.1 5.9 10

Use a validated GFR estimating equation to derive GFR (eGFR) from the
serum filtration markers, creatinine and/or cystatin C. Different equations
may be required for adults and children.

Figure 3




8
Kidney failure risk Child/adolescent Special considerations for CKD care across the lifespan
• Growth
Your patient’s risk of kidney failure can be calculated from validated • Nutrition Sex
equations that incorporate eGFR and urine albumin, such as the kidney • Weight/BSA-based drug dosing • Menopause
failure risk equation (kidneyfailurerisk.com). Estimation of kidney failure • Neurocognitive development • Contraception
• Supporting education • Differential drug effects
risk can be used to facilitate treatment decisions, such as referral to • Transition to adult care • Differing epidemiology
nephrology, placement of fistula, and referral for transplant evaluation. • Holistic approach to care for of risk factors and
the whole family unit complications




9
Use validated risk assessment tools Older adults
• Multidimensionality of
chronic conditions/
People with CKD have elevated risks for cardiovascular outcomes including heart
multimorbidity
failure, myocardial infarction and stroke. Estimated 10-year cardiovascular risk • Frailty (including sarcopenia)
Gender
should be assessed using a validated risk tool that incorporates kidney tests to Pregnancy/lactation • Cognitive function
• Gender identity
guide treatment for prevention of cardiovascular disease. One example is the • Drug pharmacokinetics • Polypharmacy
• Gender roles
and pharmacodynamics • Prioritization
PREVENT equation that was derived from large populations in the United States. • Drug teratogenicity
• Gender relations
• End-of-life care
• Institutionalized
• Risk of CKD progression
gender
• Increased risk of pregnancy




10
complications, preterm birth and
CKD care across the lifespan small for gestational age babies
• Fertility
Special considerations should be given for CKD care across the lifespan (Figure
3). Use a personalized approach, considering age, sex, and gender for diagno-
sis, risk assessment, and treatment. At the extremes of age - the very young and
the very old - diagnostic procedures, treatment aims, treatment modalities, and
decision-making may differ due to differences in prognosis, treatment options,
and prioritization. ACR, albumin-creatinine ratio; CKD, chronic kidney disease; cr, creatinine;
cys, cystatin C; (e)GFR, (estimated) glomerular filtration rate

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