Nephrotic Syndrome

Carolina Tapia, Khalid Bashir, Carolina Tapia, Khalid Bashir

Excerpt

Nephrotic syndrome (NS) is a clinical syndrome defined by massive proteinuria responsible for hypoalbuminemia, with resulting hyperlipidemia, edema, and various complications. It is caused by increased permeability through the damaged basement membrane in the renal glomerulus, especially infectious or thrombo-embolic. It results from an abnormality of glomerular permeability that may be primarily due to an intrinsic renal disease in the kidneys or secondary due to congenital infections, diabetes, systemic lupus erythematosus, neoplasia, or certain drug use. Nephrotic-range proteinuria is defined as the urinary loss of 3 grams or more of proteins per 24 hours or, on a single spot urine sample, the presence of 2 g of protein per gram of urinary creatinine. This proteinuria can also result from other systemic diseases, such as amyloidosis.

The disorder can affect people of all ages. In most children, the first sign of nephrotic syndrome is facial swelling. Adults usually present with dependent edema.

The nephrotic syndrome could affect adults and children of both genders and any race. Also, it could occur in a typical form or with nephritic syndrome. The latter denotes glomerular inflammation leading to hematuria and impaired renal function.

The first indication of nephrotic syndrome in children is the swelling of the face which then progresses to the entire body. Adults may present with dependent edema. Other common features are fatigue and loss of appetite.

Conflict of interest statement

Disclosure: Carolina Tapia declares no relevant financial relationships with ineligible companies.

Disclosure: Khalid Bashir declares no relevant financial relationships with ineligible companies.

Copyright © 2023, StatPearls Publishing LLC.

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