Back to Basics: Hypercalcemia
Mon, 04/09/2018 - 12:49am
Calcium was found to be 13.1 mg/dL
Hypercalcemia
- Total calcium >10.5mg/dL, usually asymptomatic when less than 12
- Ionized calcium >2.7 mEq/L
- More commonly associated with hyperparathyroidism or malignancy
Stones, Bones, Moans and Groans!
- General - malaise, weakness, dehydration
- Neurologic - confusion, headache, depression, hallucinations, hyporeflexia
- Skeletal - bone pain, deformities Cardiovascular - hypertension, QT shortening, wide T wave, ST depression
- Gastrointestinal - nausea, vomiting, constipation, abdominal pain, PUD, pancreatitis
- Urologic - polyuria, renal insufficiency, nephrolithiasis
Corrected calcium (mg/dL) = measured total Ca+2 + 0.8 (4.0 - serum albumin (g/dL)
Symptomatic patient or asymptomatic with Ca+2 >14 mg/dL, treat with volume repletion
- 0.9% NS at 500-1000 mL/h for 2-4 hours
- Furosemide (20- 40mg) for diuresis
- Corrent K and Mg
- Corticosteroids (prednisone 1-2mg/kg PO or hydrocortisone 200-300mg IV) to reduce mobilization of calcium from bone (in Addison’s)
- IV bisphosphonates for hypercalcemia assoc with malignancy
References:
Petrion R, Marino R. "Fluids and Electrolytes." Tintinalli's Emergency Medicine: A Comprehensive Study Guide, 8eEds. Judith E. Tintinalli, et. al. New York, NY: McGraw-Hill, 2016, pg109-10.