Secondary hyperparathyroidism due to Vit D deficiency shows:
Correct Answer: Hypophosphatemia
Description: Vitamin D deficiency causes hypocalcemia and hypomagnesemia and decreases GI absorption of calcium and phosphate. Decreased serum Ca2+ will stimulate PTH secretion. The secondary hyperparathyroidism will bring the Ca2+ levels toward normal but cause phosphaturia. Thus serum phosphate loss will be fuher aggravated - hypophosphatemia. The level of calcium phosphate product is low, bone mineralization is impaired and demineralization is increased.
Category:
Physiology
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