Calcium Chloride Administration Guidelines

Emergency Indications

The American Heart Association recommends administering 10% calcium chloride 5-10 mL (500-1000 mg) IV over 2-5 minutes when hyperkalemia causes ECG changes, as it acts as a cardioprotective agent by stabilizing the myocardial cell membrane 1, 2
The American Heart Association suggests administering 10% calcium chloride 5-10 mL IV over 2-5 minutes during cardiac arrest associated with hypermagnesemia (Class IIb, Level of Evidence C) 2
For hemodynamic instability from calcium channel blocker poisoning, administer 10% calcium chloride 0.6 mL/kg over 5-10 minutes, which may be followed by a continuous infusion at 0.3 mEq/kg per hour 3

Administer calcium chloride through a central venous catheter whenever possible to avoid severe skin and soft tissue necrosis requiring debridement and skin grafting 3
Continuous ECG monitoring is mandatory during administration, especially in patients on cardiac glycosides 3, 4

The pediatric dose is 5 mg/kg rapid bolus (maximum 300 mg), which may be repeated up to a total daily dose of 15 mg/kg 3

Do not use calcium chloride for asymptomatic hypocalcemia 4
In tumor lysis syndrome with hyperphosphatemia, calcium administration increases the risk of calcium phosphate precipitation, so obtain renal consultation first 4

Calcium chloride provides approximately 3 times more elemental calcium per volume than calcium gluconate 4
For emergency hyperkalemia treatment, either calcium chloride 5-10 mL (10%) or calcium gluconate 15-30 mL (10%) is acceptable 1, 2

In pediatric patients, the dose of calcium chloride is 20 mg/kg (0.2 mL/kg of CaCl₂ 10%), administered by slow push during cardiac arrest, and the equivalent dose of calcium gluconate is 60 mg/kg 5, 6
The American Academy of Pediatrics recommends calcium administration during cardiac arrest only in documented cases of hyperkalemia, hypocalcemia, hypermagnesemia, or calcium channel blocker toxicity 5, 6

During cardiac arrest due to hyperkalemia, it is reasonable to administer standard adjuvant therapies to reduce serum potassium, including bicarbonate 1-2 mEq/kg IV, especially if metabolic acidosis is documented 5, 6
The American Heart Association recommends administering calcium during cardiac arrest only in cases of hyperkalemia, hypocalcemia, hypermagnesemia, or calcium channel blocker toxicity 5, 6

Administer calcium preferably through a central venous catheter to avoid severe skin and soft tissue necrosis that can occur with peripheral line extravasation 5, 6
Continuous cardiac monitoring is mandatory during calcium administration 5, 6
Stop injection if symptomatic bradycardia occurs 5, 6
Do not mix calcium with sodium bicarbonate or vasoactive amines in the same line 5, 6

Although the recommendation for calcium is based on low-level evidence (Class IIb, Level of Evidence C), observational studies demonstrate clinical benefit, with a prospective study showing that calcium gluconate improved major rhythm disturbances caused by hyperkalemia 7