Association Between DXA Results and the Complications, Clinical Courses and Outcomes in Chronic Dialysis Patients

Background:

Several large-scale studies enrolling CKD patients discovered that low BMD is still an important risk factor for developing fragility fractures, while chronic dialysis patients are reported to have 4 to5 fold higher risk of fracture compared to general population. However, the relationship between bone mineral density (BMD) by dual-energy X-ray absorptiometry (DXA) and fracture and other adverse events in patients with CKD patients is still unclear. In addition, declining of renal function could affect the normal physiological regulating of blood levels of calcium, phosphate, fibroblast growth factor 23 (FGF23), parathyroid hormone (PTH), and vitamin D, which could influence the bone mineral density of chronic dialysis patients. Recently, it is well known that serum FGF23 is already elevated at the early stage of CKD patients and independently related to CKD. However, there are a limited number of reports indicate that the effects of the interactions among FGF23, calcium, phosphate, PTH and vitamin D on low bone mineral density and sacropenia in CKD patients.

Aims:

1. To determine whether BMD by DXA was associated with fractures and other adverse events in dialysis patients.
2. To explore the effects of the interactions among FGF23, calcium, phosphate, PTH and vitamin D on low bone mineral density and sacropenia in dialysis patients.

Method: