慢性肾衰竭 (ＣＲＦ) ,是各种肾脏病和 /或累及肾脏的系统性疾病发展到晚期所出现的代谢产物和毒物的潴留 ,水、电解质紊乱和酸碱平衡失调以及某些内分泌功能异常为主要表现的临床严重症候群〔1〕。病程一般是不可逆的 ,且呈进行性加重。因此 ,如何抓住早、中期时机 ,积极治疗 Chronic renal failure (CRF) is a retention of metabolites and poisons that occur during the late development of a variety of kidney and / or systemic diseases involving the kidneys, disturbances of water and electrolytes, disorders of acid-base balance, and certain endocrine dysfunction The main clinical manifestations of severe symptoms 〔1〕. The course of the disease is generally irreversible, and was progressive increase. Therefore, how to seize the early and medium-term opportunities, active treatment