Management of a Patient with Improved Kidney Function

Understanding the GFR Improvement

The patient's initial GFR of 67 mL/min/1.73m² and current GFR of 73 mL/min/1.73m² both fall within Stage 2 CKD (GFR 60-89 mL/min/1.73m²), indicating mild kidney function impairment 1, 3
Small variations in GFR (±5-10%) are common and can be affected by hydration status, diet, medication changes, and normal biological variability 2

Assess for factors that may have contributed to the improved kidney function, including better blood pressure control 1, improved glycemic control if diabetic 4, 1, and medication changes (particularly discontinuation of nephrotoxic medications) 2
Continue routine monitoring of kidney function, including checking serum creatinine and eGFR annually for patients with GFR 60-89 mL/min/1.73m² (Stage 2 CKD) 1, 2
Measure urine albumin-to-creatinine ratio (UACR) at least once yearly to assess for kidney damage 1, 5
Monitor blood pressure at each visit, targeting <140/90 mmHg 1, 5

For patients with GFR >60 mL/min/1.73m², focus on risk factor modification to prevent progression of kidney disease, including blood pressure control - target <140/90 mmHg 1, 5, glycemic control if diabetic - optimize HbA1c 4, 1, and avoiding nephrotoxic medications when possible 2
Consider ACE inhibitor or ARB therapy, particularly if hypertensive, if UACR is elevated (≥30 mg/g) 1, 5

Consider referral in the future if GFR declines to <30 mL/min/1.73m² 2, 5, rapid decline in GFR (>5 mL/min/1.73m²/year) 2, development of significant albuminuria (UACR ≥300 mg/g) 1, 5, or uncertainty about the etiology of kidney disease 2, 5