Nephrotic Syndrome — Beginner

Heavy proteinuria is the defining renal feature of nephrotic syndrome and is usually accompanied by hypoalbuminemia and edema.

Urinary albumin loss lowers plasma oncotic pressure and promotes movement of fluid into the interstitial space.

Hypoalbuminemia and compensatory hepatic lipoprotein production commonly produce hyperlipidemia.

Nephrotic syndrome increases thromboembolic risk, and acute dyspnea with pleuritic pain warrants urgent evaluation.

Loss of immunoglobulins and complement components can increase susceptibility to bacterial infections, including encapsulated organisms.

The spot urine protein-to-creatinine ratio provides a practical estimate of protein excretion.

Moderate sodium restriction helps reduce sodium and water retention; fluid and protein plans must be individualized.

New unilateral swelling may signal deep venous thrombosis, an important complication of nephrotic syndrome.

Evaluation should address kidney function, systemic causes, medications, and whether biopsy or disease-specific therapy is indicated.

Foamy urine can reflect high urinary protein concentration, although it is not diagnostic by itself.