肾病综合征是一种症状群,由于肾小球血管基膜对蛋白的通透性增高引起。一、特点:(1)全身性显著的水肿。(2)大量蛋白尿(4克以上/日)。(3)低蛋白血症(<3克%),尤其是白蛋白降低。(4)血胆固醇增高。二、病因:(一)特发性肾病综合征:病因尚未明,小儿和成人不同,本病常是原发性,以往无肾脏病和同时存在全身疾病。有人认为本病是一 Nephrotic syndrome is a group of symptoms caused by increased permeability of glomerular basement membranes to proteins. First, the characteristics: (1) systemic significant edema. (2) a large number of proteinuria (4 grams or more / day). (3) Hypoproteinemia (<3%), especially albumin. (4) increased blood cholesterol. Second, the cause: (a) idiopathic nephrotic syndrome: the etiology is not yet clear, different children and adults, the disease is often primary, no kidney disease in the past and the existence of systemic diseases. Some people think this disease is one