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蛋白尿与肾脏疾病进展密切相关,但也可能是儿童中出现的一种正常的一过性现象。尿蛋白>150 mg/(1.73 m2·d)或>4 mg/(m2·h)定义为尿蛋白阳性。既往的报道中,多个中心均发现,在无症状儿童中,亦有相当比例的蛋白尿者。按蛋白尿的来源,可分为肾小球蛋白尿、肾小管蛋白尿、分泌性蛋白尿、溢出性蛋白尿。蛋白尿按临床分类可分为暂时性蛋白尿、直立性蛋白尿、持续性无症状蛋白尿、原发或继发性肾小球疾病、原发或继发性肾小管间质性疾病。
Proteinuria is closely related to the progression of kidney disease, but it may also be a normal transient phenomenon in children. Urine protein> 150 mg / (1.73 m2 · d) or> 4 mg / (m2 · h) is defined as urinary protein positive. In previous reports, many centers found that there was a significant proportion of proteinuria in asymptomatic children. According to the source of proteinuria, can be divided into glomerular proteinuria, tubular proteinuria, secreted proteinuria, overflow proteinuria. According to the clinical classification of proteinuria can be divided into temporary proteinuria, orthostatic proteinuria, persistent asymptomatic proteinuria, primary or secondary glomerular disease, primary or secondary tubulointerstitial disease.