Chronic Kidney Disease Management

Understanding GFR and Kidney Function Classification

A GFR of 73 mL/min/1.73 m² represents mildly reduced kidney function compared to the normal value in young adults, but is still considered within normal range for most adults, according to the Annals of Internal Medicine 1, 2
The Kidney Disease: Improving Global Outcomes (KDIGO) classification system categorizes a GFR of 73 mL/min/1.73 m² as G2 (60-89 mL/min/1.73 m²), indicating mildly decreased GFR 2, 3
This level of kidney function does not meet the diagnostic threshold for CKD unless other markers of kidney damage are present, such as albuminuria, abnormal urine sediment, or structural abnormalities 2

A GFR of 73 mL/min/1.73 m² alone, without other markers of kidney damage, is not associated with significantly increased risks for adverse outcomes, as stated by the American Journal of Kidney Diseases 2, 4
The risk of progression to end-stage renal disease (ESRD) is low with this GFR level, particularly if albuminuria is absent, according to the Annals of Internal Medicine 2

The Kidney Disease: Improving Global Outcomes (KDIGO) recommends annual monitoring of kidney function for patients with GFR >60 mL/min/1.73 m² without albuminuria 2
Assessment should include measurement of serum creatinine and calculation of eGFR, as well as urinalysis for albuminuria, according to the Annals of Internal Medicine 2
Blood pressure measurement is also recommended, with a target of ≤140/90 mmHg for patients without albuminuria, as stated by the Journal of Clinical Oncology 6

Blood pressure control is essential, with a target of ≤140/90 mmHg for patients without albuminuria, according to the Journal of Clinical Oncology 6
Lifestyle modifications, such as moderate sodium restriction, regular physical activity, smoking cessation, and weight management, are recommended, as stated by the Praxis Medical Insights: Practical Summaries of Clinical Guidelines 5

Factors that can affect the accuracy of eGFR calculations include extremes of muscle mass or weight, non-steady state conditions, and advanced age, according to the Journal of Clinical Oncology and the American Journal of Kidney Diseases 2, 4, 6

Nephrology referral is generally not necessary unless there are other concerning features, such as significant albuminuria or rapid decline in GFR, according to the Journal of Clinical Oncology and the Praxis Medical Insights: Practical Summaries of Clinical Guidelines 5, 6