Management of Mildly Decreased Kidney Function

Classification and Risk Assessment

An eGFR of 66 mL/min/1.73 m² falls into CKD stage 2 (60-89 mL/min/1.73 m²), classified as mildly decreased GFR with evidence of kidney damage 1, 3

Annual assessment of kidney function with serum creatinine and eGFR calculation is recommended by the American Diabetes Association 2, 4
Annual quantitative assessment of urinary albumin excretion (urine albumin-to-creatinine ratio or UACR) is recommended by the American Diabetes Association 1, 2
Blood pressure monitoring at each clinical visit to maintain target <130/80 mmHg is recommended by the American Diabetes Association 4

At this eGFR level (66 mL/min/1.73 m²), most medications do not require dose adjustments, according to the European Society of Cardiology 5
Fenofibrate can be used at normal doses (dose reduction required only when eGFR <60 mL/min/1.73 m²), as recommended by the American College of Cardiology 6
ACE inhibitors or ARBs can be used at standard doses with appropriate monitoring, according to the American Diabetes Association 1, 4

Optimize glycemic control if the patient has diabetes, as recommended by the American Diabetes Association 1, 4
Maintain blood pressure control, preferably with ACE inhibitors or ARBs if hypertension and albuminuria are present, according to the American Diabetes Association 1, 4
Address modifiable cardiovascular risk factors (smoking, obesity, sedentary lifestyle), as recommended by the American Diabetes Association 1, 3
Avoid nephrotoxic medications when possible, including prolonged use of NSAIDs, as recommended by the British Pharmacological Society 7

Monitor kidney function (serum creatinine and eGFR) annually, as recommended by the American Diabetes Association 2, 4
Increase monitoring frequency to every 6 months if there is evidence of progressive decline in eGFR or if the patient has diabetes, according to the British Pharmacological Society 7
If eGFR declines to <60 mL/min/1.73 m², increase monitoring frequency and evaluate for complications of CKD, as recommended by the American Diabetes Association 2, 4

Consider referral if there is rapid decline in eGFR (>5 mL/min/1.73 m² per year), significant proteinuria (UACR >300 mg/g), difficult-to-control hypertension, or suspected non-diabetic kidney disease, as recommended by the American Diabetes Association 1, 2