Browse categories and answer follow-up questions to refine your symptom profile.
Immediate threats
Initial stabilization priorities
Airway protection triggers
Depressed mental status with aspiration risk
Refractory vomiting with inability to protect airway
Circulation threats
Dysrhythmia risk with shortened QT interval
Hypotension from dehydration
Shock with sepsis or malignancy
Neurologic threats
Seizure
Coma
Immediate escalation triggers
Total calcium at or above 3.5 mmol/L
Ionized calcium at or above 1.75 mmol/L
New dysrhythmia
Altered mental status
Anuric acute kidney injury
Key targets and monitoring
Monitoring and targets
Cardiac monitoring
Continuous telemetry for moderate to severe hypercalcemia
ECG for QT interval and conduction changes
Volume status targets
Euvolemia
Urine output target at or above 0.5 mL/kg/hour
Electrolyte targets
Potassium within reference range
Magnesium within reference range
Phosphate within reference range when safe to replete
Severity classification
Severity framework
Mild
Total calcium 2.6 to 3.0 mmol/L
Minimal symptoms
Moderate
Total calcium 3.0 to 3.5 mmol/L
Symptoms common
Severe hypercalcemic crisis
Total calcium above 3.5 mmol/L
Ionized calcium above 1.75 mmol/L
High risk of coma and dysrhythmia
Early cause triage
Rapid pattern recognition
PTH mediated pattern
Elevated or inappropriately normal PTH
Primary hyperparathyroidism phenotype
PTH independent pattern
Suppressed PTH
Malignancy pattern
Vitamin D mediated pattern
Granulomatous disease pattern
Medication and intake pattern
Thiazide exposure
Lithium exposure
Calcium and alkali excess
Vitamin A excess
SymptomDx is an educational tool for medical professionals. It does not replace clinical judgment. Verify all clinical data and drug dosages with authoritative sources.