肾脏是人体的重要器官,几乎所有全身性疾病都可以累及肾脏,自然肾脏病变也可影响全身.中老年人肾组织的退行性改变导致肾功能逐渐下降,几年来已有许多国内外学者论述.值得注意的是中老年人肾脏在一般情况下虽能维持正常生理功能,一旦遇有肾负荷略略增加的因素,即易出现肾功能不全.用此对中老年患者进行早期肾功能监测实属必要.然而通常应用的肾功能检查种类繁多,其中多 Kidney is an important organ of the human body, almost all systemic diseases can affect the kidneys, natural kidney disease can also affect the body.Degenerative renal tissue in the elderly lead to a gradual decline in renal function, many domestic and foreign scholars have been discussed. It is noteworthy that in the general situation, although the kidneys can maintain normal physiological function, in the event of a slight increase in renal load, that is, prone to renal insufficiency using this early middle-aged elderly patients with renal function monitoring is necessary However, a great variety of renal function tests are commonly used, many of them