Which laboratory parameters are most relevant to PD-related bone-mineral disorder?

Which laboratory parameters are most relevant to PD-related bone-mineral disorder?

• A. Serum phosphorus, calcium, PTH, and vitamin D status.
• B. Albumin, creatinine, bicarbonate, and sodium.
• C. Hemoglobin, ferritin, transferrin saturation, and vitamin B12.
• D. Calcium, phosphate, magnesium, and zinc.

Answer: (A)

In PD-related bone-mineral disorder, the central players are phosphate, calcium, PTH, and vitamin D status. The failing kidney cannot effectively excrete phosphate, leading to high phosphate levels. This stimulates secondary hyperparathyroidism as the body tries to maintain calcium and phosphate balance, and reduced activation of vitamin D lowers calcium absorption from the gut, further promoting PTH release. PTH, calcium, phosphate, and vitamin D status together drive the bone turnover and mineral balance disorders seen in CKD patients on PD, so monitoring these four parameters is essential for assessing and managing bone-mineral disease. The other options include general nutrition or acid-base markers or omit PTH and vitamin D, making them less directly relevant to PD-related bone-mineral disorder.

In PD-related bone-mineral disorder, the central players are phosphate, calcium, PTH, and vitamin D status. The failing kidney cannot effectively excrete phosphate, leading to high phosphate levels. This stimulates secondary hyperparathyroidism as the body tries to maintain calcium and phosphate balance, and reduced activation of vitamin D lowers calcium absorption from the gut, further promoting PTH release. PTH, calcium, phosphate, and vitamin D status together drive the bone turnover and mineral balance disorders seen in CKD patients on PD, so monitoring these four parameters is essential for assessing and managing bone-mineral disease. The other options include general nutrition or acid-base markers or omit PTH and vitamin D, making them less directly relevant to PD-related bone-mineral disorder.