Severe hypercalcemia management includes which initial measure?

Severe hypercalcemia management includes which initial measure?

• A. Oral hydration with thiazide diuretics
• B. Dialysis only
• C. IV saline and furosemide
• D. Calcitonin only

Answer: (C)

Severe hypercalcemia is managed first by restoring intravascular volume to improve kidney perfusion and promote calcium excretion. Starting with IV isotonic saline rehydrates the patient, increases glomerular filtration, and enhances calciuresis. Once euvolemia is achieved, adding a loop diuretic like furosemide further increases calcium excretion by blocking calcium reabsorption in the loop of Henle. This combination directly targets the immediate problem—high calcium with reduced excretion. Avoiding thiazide diuretics is important because they raise calcium levels and can worsen the situation. Dialysis is not the initial step unless there is life-threatening hypercalcemia with renal failure or nonresponsive cases where rapid correction is impossible with fluids. Calcitonin can lower calcium quickly but only for a short period, and bisphosphonates take longer to work, so they’re not first-line in the acute phase. So the best initial measure is IV saline with furosemide to promptly promote calcium excretion after rehydration.

Severe hypercalcemia is managed first by restoring intravascular volume to improve kidney perfusion and promote calcium excretion. Starting with IV isotonic saline rehydrates the patient, increases glomerular filtration, and enhances calciuresis. Once euvolemia is achieved, adding a loop diuretic like furosemide further increases calcium excretion by blocking calcium reabsorption in the loop of Henle. This combination directly targets the immediate problem—high calcium with reduced excretion.

Avoiding thiazide diuretics is important because they raise calcium levels and can worsen the situation. Dialysis is not the initial step unless there is life-threatening hypercalcemia with renal failure or nonresponsive cases where rapid correction is impossible with fluids. Calcitonin can lower calcium quickly but only for a short period, and bisphosphonates take longer to work, so they’re not first-line in the acute phase.

So the best initial measure is IV saline with furosemide to promptly promote calcium excretion after rehydration.