To investigate of nutritional status in maintenance hemodialysis patients by indicators: anthropometric, dietary energy, and protein intake, dialysis malnutrition score, serum albumin, prealbumin levels. To Understand the relationship between nutritional status and some clinical and laboratory characteristics, initially assessing the results of an oral nutritional supplement on nutritional status in 12 weeks in maintenance hemodialysis patients. | Summary of the Dissertation of Medicine A study on nutritional status the results of an oral nutritional supplement on maintenance hemodialysis patients