Calcium Chloride

Trade Names:
Calcium chloride
- Injection 10% (1.36 mEq of elemental calcium/mL)

Pharmacology

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Essential in the functional integrity of the nervous and muscular systems, where it has a major influence on the excitability of these tissues. Calcium is necessary for normal cardiac function and is involved in blood coagulation. 1 g (10 mL) of calcium chloride 10% contains 273 mg (13.6 mEq) of elemental calcium.

Indications and Usage

Treatment of hypocalcemic tetany; cardiac resuscitation when epinephrine has failed to improve weak or ineffective myocardial contractions; adjunctive therapy in various conditions such as insect bites or stings (eg, black widow spider bites); sensitivity reactions (particularly when characterized by urticaria); as an aid in the treatment of depression due to overdosage of magnesium sulfate; as an aid in the management of acute symptoms in lead colic.

Contraindications

Ventricular fibrillation; hypercalcemia. Not recommended in the treatment of asystole and electromechanical dissociation.

Dosage and Administration

IV 2 to 4 mL injected into the ventricular cavity. Avoid injection into the cardiac muscle.

IV 5 to 10 mL at intervals of 1 to 3 days injected slowly.

IV 2.7 to 5 mg/kg of hydrated calcium chloride (or 0.136 to 0.252 mEq of elemental calcium per kg, or 0.027 to 0.05 mL of calcium chloride 10% injection per kg) every 4 to 6 h.

General Advice

• For IV use. When used for cardiac resuscitation, administer directly into the ventricular cavity. Do not give by IM or subcutaneous route.
• Inject slowly, not to exceed a rate of 0.5 to 1 mL/min.
• Administer preferably in a central or deep vein.
• Take caution to prevent perivascular leakage.
• Institute oral calcium as soon as practicable.

Storage/Stability

Store at 59° to 86°F.

Drug Interactions

May potentiate digitalis toxicity.

Laboratory Test Interactions

None well documented.

Adverse Reactions

Cardiovascular

Hypotension.

CNS

Sense of oppression.

GI

Calcium taste in mouth.

Miscellaneous

Tingling sensation; sensation of heat waves.

Precautions

Pregnancy

Undetermined.

Lactation

Undetermined.

Extravasation risk

May cause severe necrosis and sloughing if injected into muscle or into subcutaneous or perivascular tissue.

Hypercalcemia

Because hypercalcemia may be more dangerous than hypocalcemia, avoid overtreatment of hypocalcemia.

Hypocalcemic tetany

Other therapy such as parathyroid hormone or vitamin D may be indicated according to the etiology of the tetany.

Rapid IV administration

Too rapid IV administration or overdosage may produce serious cardiac effects, including bradycardia, arrhythmia, and ventricular fibrillation.

Overdosage

Symptoms

Serious cardiac effects, including bradycardia, arrhythmia, and ventricular fibrillation; acute hypercalcemia syndrome (eg, markedly elevated plasma calcium level, weakness, lethargy, intractable nausea and vomiting, coma, sudden death.)

Patient Information

• Advise patient, family, or caregiver that medication will be prepared and administered by health care provider in a health care setting.
• Advise patient, family, or caregiver to immediately report any of the following to health care provider: injection-site reaction or pain, intractable nausea and vomiting, general body weakness.

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