Monitoring of Bone Mineral Content in Patients on Regular Hemodialysis

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Abstract
Bone mineral content (BMC) was measured at the lumbar spine region by means of dual photon absorptiometry over a 3-year period in 20 patients on regular hemodialysis (RHD). Baseline mean BMC at the start of the monitoring was significantly decreased to 82.64% of predicted value (p < 0.05). During a 3-year follow-up mean BMC rose significantly to 90.61% (p < 0.05). Six patients received vitamin D supplements. Analysis of the data showed that rise of BMC was similar whether vitamin D was given or not. Our data suggest that (1) RHD inhibits bone loss at the lumbar spine level that occurred mainly before active uremia treatment and (2) the increment of BMC observed in this study can be attributed to the different site of measurement, the inaccuracy of the measurements by interference with soft tissue calcifications and the dialysis conditions