Abstract
Type 2 diabetic patients with end-stage renal disease are often overweight (BMI > 24) at the start of dialysis therapy. However, there are very few reports in the literature concerning the nutritional status of these patients after prolonged haemodialysis treatment. Therefore, we compared nutritional parameters in type 2 diabetic patients and age-matched non-diabetic patients after at least 18 months of renal replacement therapy with haemodialysis. In a cross-sectional study, we measured BMI, serum albumin, total protein, serum cholesterol and interdialytic weight gain (IWG), and performed a subjective global assessment (SGA) in 14 patients with type 2 diabetes and 16 non-diabetic patients (aged > or = 50 years, haemodialysis therapy > or = 18 months). Protein intake was estimated using the protein catabolic rate (PCR) and Kt/V was calculated to compare the dose of dialysis. BMI was significantly higher in patients with type 2 diabetes (30+/-7 vs 24+/-3, P<0.01). In contrast, the concentration of serum albumin was significantly lower (3180+/-499 mg/dl vs 3576+/-431 mg/dl, P<0.05), but six of the diabetic patients had signs of chronic inflammation. All other nutritional parameters did not differ between the two groups. In addition, there were no significant differences in the intake of protein (PCR 0.93+/-0.19 vs 0.92+/-0.22) and the dose of dialysis (Kt/V 1.13+/-0.19 vs 1.2+/-0.2). After > or = 18 months of haemodialysis therapy, the majority of type 2 diabetic patients (9/14) were still overweight (BMI > 24). The nutritional status of diabetic patients was similar to that of age-matched non-diabetic patients on prolonged haemodialysis, but serum albumin levels were significantly lower in diabetics. The lower albumin levels in the diabetic patients may be explained by a state of subclinical chronic inflammation.
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