临床上,当病人24小时尿量低于400ml 时称为少尿,低于100或50ml 时称为无尿。因为一般饮食情况下,正常肾脏即使发挥最大浓缩功能,也必需保持尿量不少于400ml,才能维持尿素氮等正常排泄。绝对无尿较少见,一般认为50ml 以下的“尿液”,可能非肾小球滤过而是肾小管分泌所致。急剧出现少尿和无尿,见于多种病因,如急性肾小球肾炎、急性间质性肾炎、结缔组织病肾病、急性肾功能衰竭 Clinically, when the patient’s urine output of less than 400ml 24 hours when oliguria, less than 100 or 50ml called anuria. Because the general diet, even if the normal kidney to maximize the concentration function, but also must maintain the urine output of not less than 400ml, to maintain normal urea nitrogen and other excretion. Absolute no urine is less common, generally believed that the following 50ml “urine” may be caused by non-glomerular filtration but tubular secretion. Acute oliguria and anuria, found in a variety of causes, such as acute glomerulonephritis, acute interstitial nephritis, connective tissue disease nephropathy, acute renal failure