Graph showing the time course of development of hypocalcemia following parathyroidectomy for primary hyperparathyroidism

Time course of development of hypocalcemia in 25 patients with hungry bone syndrome following parathyroidectomy for primary hyperparathyroidism. Most of the fall in the plasma calcium concentration occurred in the first 24 hours after surgery. To convert plasma calcium concentration from mg/dL to mmol/L, divide by 4.