Calcium Chloride Pediatric Dose — Electrolyte Replacement
Calcium chloride is an inorganic calcium salt that raises ionized serum calcium by directly providing elemental calcium (27% elemental calcium by weight). It is used in pediatric practice for the treatment of symptomatic hypocalcemia and hypocalcemia-related cardiac or neuromuscular compromise. As a concentrated electrolyte solution, it requires careful administration under monitored conditions.
Pediatric Dosing
- Dose: 10–20 mg/kg IV per dose
- Infusion rate: Administer over 30–60 minutes
- Maximum single dose: 2,000 mg (2 g)
- Route: Central venous line required
For a 20 kg child: 20 kg × 10 mg/kg = 200 mg (minimum) to 20 kg × 20 mg/kg = 400 mg (maximum) per dose. For a 50 kg adolescent: 50 kg × 20 mg/kg = 1,000 mg per dose; the 2 g maximum dose cap applies to all patients regardless of weight. Consult institutional protocol for dosing frequency and total daily limits.
Indications and Clinical Context
Calcium chloride is indicated for the correction of symptomatic hypocalcemia in pediatric patients, including manifestations such as tetany, seizures, laryngospasm, prolonged QTc, and hemodynamic instability attributable to low ionized calcium. It is commonly utilized in PICU settings following cardiac surgery, during massive transfusion protocols, and in the management of hypoparathyroidism or critical illness-associated hypocalcemia.
Calcium chloride delivers approximately three times more elemental calcium per milliliter than calcium gluconate, making it the preferred formulation when rapid correction or high elemental calcium delivery is clinically necessary. Monitoring of ionized calcium levels guides dosing adequacy and helps prevent hypercalcemia.
Administration and Monitoring
Calcium chloride must be administered via a central venous line due to its high osmolarity and significant vesicant properties; peripheral administration carries a substantial risk of tissue necrosis and extravasation injury. Administer each dose as a slow IV infusion over 30–60 minutes; rapid infusion may cause bradycardia, hypotension, or cardiac arrest. The single-dose maximum is 2 g.
- Monitor heart rate and ECG continuously during infusion
- Monitor ionized calcium levels before, during, and after administration
- Avoid co-infusion with bicarbonate or phosphate-containing solutions (precipitation risk)
- Use with caution in patients receiving digoxin; hypercalcemia potentiates digoxin toxicity
- Consult institutional protocol for repeat dosing intervals and daily cumulative limits
Disclaimer: This article is an educational reference summarizing standard pediatric dosing values. It is not a substitute for clinical judgment. Always verify doses against institutional protocols, the current edition of authoritative references (e.g., Lexicomp, Harriet Lane Handbook, PALS guidelines), the patient’s accurate weight, and any patient-specific factors (renal/hepatic function, allergies, comedications) before administration.