Which finding is characteristic of diabetic nephropathy?

Which finding is characteristic of diabetic nephropathy?

• A. Hypoalbuminemia without albuminuria
• B. Hyperlipidemia is the sole finding
• C. Persistent albuminuria greater than 300 mg per day
• D. Low blood pressure

Answer: (C)

Persistent albuminuria above 300 mg per day is a hallmark of overt diabetic nephropathy. Chronic hyperglycemia damages the glomerular filtration barrier, leading to leakage of albumin into the urine. Early on you may see microalbuminuria (30–300 mg/day), but when the disease progresses to overt nephropathy, albumin excretion becomes persistently high and exceeds 300 mg/day. This level of albuminuria reflects significant glomerular injury due to factors like thickened basement membranes and mesangial expansion, and it tracks with decline in kidney function over time. Clinically, this finding guides treatment aimed at protecting renal function, such as starting ACE inhibitors or ARBs and optimizing blood pressure and glycemic control. While hypertension and dyslipidemia can accompany diabetic nephropathy, low blood pressure is not typical, and hypoalbuminemia without albuminuria isn’t characteristic.

Persistent albuminuria above 300 mg per day is a hallmark of overt diabetic nephropathy. Chronic hyperglycemia damages the glomerular filtration barrier, leading to leakage of albumin into the urine. Early on you may see microalbuminuria (30–300 mg/day), but when the disease progresses to overt nephropathy, albumin excretion becomes persistently high and exceeds 300 mg/day. This level of albuminuria reflects significant glomerular injury due to factors like thickened basement membranes and mesangial expansion, and it tracks with decline in kidney function over time. Clinically, this finding guides treatment aimed at protecting renal function, such as starting ACE inhibitors or ARBs and optimizing blood pressure and glycemic control. While hypertension and dyslipidemia can accompany diabetic nephropathy, low blood pressure is not typical, and hypoalbuminemia without albuminuria isn’t characteristic.