Age-Related Characteristics of Mineral and Bone Metabolism in Patients with Chronic Kidney Disease Stage 5D on Hemodialysis

Abnormalities in mineral and bone metabolism are a risk factor for increased cardiovascular and all-cause mortality and bone fractures in patients with chronic kidney disease stage 5D (CKD 5D). This single-center study aimed to investigate the age-related features of mineral and bone disorders in patients with CKD 5D on haemodialysis treatment and analyse the therapy provided. The biochemical parameters of mineral and bone metabolism and the ongoing therapy were studied in 90 patients undergoing hemodialysis treatment, of whom 44 (48.9%) were aged <65 years and 46 (51.1%) were aged ≥65 years. Serum phosphate, 25(OH) vit.D, parathyroid hormone, and serum albumin were significantly lower in patients aged ≥65 years compared with patients aged <65 years. There was a significant negative correlation between these parameters and age. We found no significant differences in therapy between the two age groups. A significant proportion of the patients aged ≥65 years had serum calcium and parathyroid hormone values below the lower desirable limit, while most of those aged <65 years had hyperphosphatemia and parathyroid hormone ≥600 pg/ml. Mineral and bone metabolism in CKD stage 5D patients on hemodialysis showed age-dependent patterns. Knowing them is crucial for optimal treatment.