关键词: 蛋白尿, 儿童, 病因

Abstract:

Proteinuria is usually associated with progressive renal disease，but may sometimes be a benign transient finding. Abnormal proteinuria is defined as protein excretion of ＞150 mg/1.73m2 per day or＞4 mg/m2 per hour. Many studies in deferent centers have reported that quite a few asymptomatic children with proteinuria were detected. Excessive proteinuria can be classified as glomerular proteinuria，tubular proteinuria，secretory protein and overflow proteinuria by causes. It can also be classified as transient proteinuria，postural proteinuria，persistent asymptomatic proteinuria，primary/secondary glomerular proteinuria and primary/secondary tubular proteinuria by clinical symptoms.

Key words: proteinuria, child, etiology