Further Outpatient Care
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Close follow-up of serum calcium concentrations is required in the first months of hypoparathyroidism treatment; after the serum calcium and phosphate levels stabilize, monitor these serum data every 3-6 months. Urine calcium/creatinine ratio should be monitored as well for hypercalciuria. Therapeutic goal is to maintain serum calcium in the low-normal range to decrease risk for nephrocalcinosis.
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Renal ultrasonographic studies are needed annually to assess for nephrocalcinosis development.
Inpatient & Outpatient Medications
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1,25-Dihydroxyvitamin D: This medication bypasses the parathyroid hormone (PTH)-dependent step of 1-alpha hydroxylation of 25 hydroxyvitamin D. It should be used in combination with a calcium supplement to maintain the calcium in the low normal range and serum phosphate concentrations in the mid range.
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Calcium: Any of the oral calcium supplements may be used.
Complications
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Nephrocalcinosis
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Hypocalcemia-related events, including tetany, seizure, laryngospasm, arrhythmia, and syncope
Prognosis
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Hypoparathyroidism is a chronic disease requiring strict compliance with medications. As with any chronic illness, compliance can be difficult to achieve with adolescents.
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Nephrocalcinosis can lead to kidney damage requiring intervention.
Patient Education
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Family members should recognize the signs of hypocalcemia.
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During times of stress, such as surgery or significant intercurrent illness, inherited disorders of hypoparathyroidism that have seemingly resolved can be unmasked and require intervention.
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Electrocardiogram (ECG) findings in severe hypocalcemia.