Max dose of calcium gluconate given at time
Reading File
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Reading File
Reading File
Here is a summary of the maximum single-dose of calcium gluconate across clinical contexts:
Calcium Gluconate — Dose at a Time
Standard IV Dose (Adults)
| Indication | Dose | Rate | Notes |
|---|---|---|---|
| Hyperkalemia (cardiac membrane stabilization) | 10 mL of 10% solution (= 1 g = 4.5 mEq elemental Ca²⁺) | Over 2–3 minutes | Under continuous ECG monitoring; repeat in 3–5 min if no ECG improvement |
| Symptomatic hypocalcemia | 1–2 g (10–20 mL of 10%) | Slow IV infusion | Recheck levels; maintenance infusion may follow |
| Digitalis toxicity (if also hyperkalemic) | 10 mL of 10% in 100 mL D5W | Over 20–30 min | Slower infusion to avoid hypercalcemia + digitalis toxicity |
Pediatric Dose
| Indication | Dose | Rate | Notes |
|---|---|---|---|
| Hypocalcemia | 100 mg/kg of 10% calcium gluconate | Not to exceed 100 mg/min | Continuous ECG monitoring required |
Key Points
- 10% calcium gluconate = 100 mg/mL → a standard 10 mL ampule = 1 g (1000 mg)
- Each mL of 10% calcium gluconate provides 4.5 mEq (2.23 mmol) elemental calcium
- Calcium gluconate is preferred over calcium chloride peripherally — it is less irritating and does not cause tissue necrosis on extravasation
- Effect onset: 1–3 minutes, duration: 30–60 minutes
- Do not mix with bicarbonate-containing solutions (precipitates as calcium carbonate)
Sources: Brenner and Rector's The Kidney; Tintinalli's Emergency Medicine; National Kidney Foundation Primer on Kidney Diseases
How much potassium given with iso p
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The textbooks don't have a specific entry for Isolyte P. I can answer this from established pharmacological knowledge.
Potassium Content in Isolyte P
Isolyte P (Pediatric Maintenance Solution) contains:
| Electrolyte | Concentration |
|---|---|
| Potassium (K⁺) | 20 mEq/L |
| Sodium (Na⁺) | 25 mEq/L |
| Chloride (Cl⁻) | 22 mEq/L |
| Phosphate | 3 mmol/L |
| Acetate | 23 mEq/L |
| Dextrose | 5% (50 g/L) |
Key Points
- Isolyte P is designed to match the electrolyte composition of pediatric daily maintenance fluid requirements (based on Holliday-Segar estimates)
- The 20 mEq/L potassium reflects the typical daily potassium maintenance need in children (~2 mEq/kg/day)
- It is not suitable for rapid infusion or in patients with hyperkalemia or renal impairment due to its potassium content
- Potassium is provided as a mixture of KCl + K₂HPO₄
Note: This composition is based on standard pharmacological references. The textbook library did not contain a specific Isolyte P monograph.
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