Metabolic Bone Disease
A 42-year-old female presents two weeks after total thyroidectomy for thyroid cancer with progressive tingling in her hands and feet, muscle cramps, and anxiety. Examination reveals positive Chvostek and Trousseau signs. Laboratory investigations show: calcium 1.6 mmol/L, phosphate 2.0 mmol/L (elevated), PTH 5 pg/mL (undetectable), magnesium normal. Regarding hypoparathyroidism and hypocalcemia:
Mark each as TRUE or FALSE
Hypoparathyroidism is characterized by low PTH leading to hypocalcemia and hyperphosphatemia; the mo...
Chvostek sign is elicited by tapping the facial nerve anterior to the ear, causing ipsilateral facia...
In hypoparathyroidism, phosphate is low because PTH normally inhibits phosphate reabsorption; vitami...
ECG changes in hypocalcemia include prolonged QT interval (increased risk of torsades de pointes), w...
Long-term complications of chronic hypoparathyroidism include: posterior subcapsular cataracts, basa...
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Click T (True) or F (False) for each option