在美国和加拿大分别有90%和70%的终末期肾病患者接受每周3次的血液透析治疗。尽管透析技术与药物不断改进并有40年维持性透析的经验,但透析患者的死亡率仍居高不下,每年高达18%～20%。目前仍不清楚理想的透析剂量是什么,HEMO研究表明当患者在每周3次的基础上增加透析的强度并无额外的益处。然而增加透析的强 In the United States and Canada, 90% and 70% of patients with end-stage renal disease receive hemodialysis three times a week. Despite advances in dialysis technology and medicine and 40 years of sustained dialysis experience, the mortality rate for dialysis patients remains high at 18% to 20% per year. It is not yet clear what the ideal dialysis dose is and the HEMO study shows no additional benefit when the patient increases the intensity of dialysis on a 3-weekly basis. However, increasing dialysis strong