Deficiency of which of the following mineral(s) can lead to hypocalcemia by impairing the ability of the parathyroid gland to secrete parathyroid hormone? 1. Phosphate 2. Magnesium 3. Sodium 4. Potassium Select the correct answer using the code given below:
2 only
Severe hypomagnesemia impairs PTH secretion from the parathyroid gland (and causes end-organ PTH resistance), leading to functional hypoparathyroidism and hypocalcemia. Phosphate, sodium, and potassium deficiencies do not act through this PTH-secretion mechanism.
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- Which of the following does NOT causes polyuria?
- A 36-year old chronic alcoholic, malnourished male is hospitalized with pneumonia. His condition worsens after aggressive treatment with intravenous dextrose and antibiotics. This phenomenon of 'Refeeding Syndrome' is accompanied by which one of the following biochemical alterations?
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