POTASSIUM CHLORIDE 30MEQ IN DEXTROSE 5% AND LACTATED RINGER'S IN PLASTIC CONTAINER
Clinical safety rating
cautionComprehensive clinical and safety monograph for POTASSIUM CHLORIDE 30MEQ IN DEXTROSE 5% AND LACTATED RINGER'S IN PLASTIC CONTAINER (POTASSIUM CHLORIDE 30MEQ IN DEXTROSE 5% AND LACTATED RINGER'S IN PLASTIC CONTAINER).
Potassium is the major intracellular cation; it maintains intracellular tonicity, is essential for nerve impulse transmission, cardiac contraction, and skeletal muscle function. Dextrose provides metabolic energy. Lactated Ringer's solution replaces extracellular fluid and electrolytes.
| Metabolism | Potassium is primarily eliminated renally; dextrose undergoes glycolysis and oxidative metabolism; lactate is converted to bicarbonate in the liver. |
| Excretion | Renal: >90% as potassium ions; minimal biliary/fecal elimination. |
| Half-life | Not applicable; potassium is an electrolyte with no classical half-life. Serum potassium regulation depends on redistribution (t1/2 ~1-2 hours) and renal excretion (rate varies with GFR). |
| Protein binding | Not significantly protein-bound (<2%). |
| Volume of Distribution | 0.5-0.7 L/kg; distributes primarily in extracellular fluid. |
| Bioavailability | Intravenous: 100%. |
| Onset of Action | Intravenous: Immediate (minutes) for serum potassium elevation. |
| Duration of Action | Intravenous: 2-4 hours for acute effect; continuous infusion maintains steady state. |
| Molecular Weight | 74.55 |
Adult: 10-20 mEq/h IV, not exceeding 30 mEq/h or 200 mEq/day; rate determined by serum potassium and ECG monitoring. Maximum concentration 40 mEq/L in peripheral line, 100 mEq/L in central line.
| Dosage form | INJECTABLE |
| Renal impairment | GFR 30-50 mL/min: reduce dose by 50% or use with caution; GFR <30 mL/min: avoid use due to risk of hyperkalemia; use only if potassium deficit documented and serum K+ monitored frequently. |
| Liver impairment | Child-Pugh A: no adjustment; Child-Pugh B or C: no specific adjustment but monitor serum potassium and acid-base status due to potential for concurrent metabolic alkalosis. |
| Pediatric use | Neonates and children: 0.5-1 mEq/kg/dose IV, maximum 30 mEq/dose; infuse at rate not exceeding 0.3 mEq/kg/h; must be diluted to concentration ≤40 mEq/L for peripheral IV. |
| Geriatric use | Elderly patients: start at low end of dosing range (10 mEq/h); monitor renal function and serum potassium frequently due to age-related decline in GFR and increased risk of hyperkalemia. |
| 1st trimester | Potassium chloride is a physiologic electrolyte. Use only if clearly needed. No known teratogenicity, but maintain normal serum potassium levels to avoid maternal or fetal arrhythmias. |
| 2nd trimester | Safe when administered according to clinical need. Monitor maternal potassium levels to prevent hypo- or hyperkalemia which may affect fetal cardiac function. |
| 3rd trimester | Safe when used for indicated electrolyte replacement. Avoid hyperkalemia as it may cause fetal bradycardia. Use with caution in preeclampsia due to potential renal impairment. |
Clinical note
Comprehensive clinical and safety monograph for POTASSIUM CHLORIDE 30MEQ IN DEXTROSE 5% AND LACTATED RINGER'S IN PLASTIC CONTAINER (POTASSIUM CHLORIDE 30MEQ IN DEXTROSE 5% AND LACTATED RINGER'S IN PLASTIC CONTAINER).
| Placental transfer | Potassium actively crosses the placenta via active transport. Fetal serum potassium is higher than maternal. Infusion of potassium may increase fetal levels, but physiological regulation maintains balance unless maternal levels are extreme. |
| Breastfeeding | Potassium chloride is a normal constituent of breast milk. Supplemental potassium is not known to cause adverse effects in breastfed infants. Monitor maternal potassium levels to avoid extreme hyperkalemia, which could theoretically affect the infant. |
| Lactation Rating | L1: Compatible |
| Teratogenic Risk | No evidence of teratogenicity from potassium chloride. Dextrose and lactated Ringer's components are essential nutrients; no malformation risk at therapeutic doses. Overdose or hyperkalemia may cause fetal arrhythmia or death. |
| Fetal Monitoring | Monitor serum potassium, glucose, and electrolytes; cardiac monitoring for arrhythmias; fetal heart rate monitoring during maternal infusion; assess for signs of fluid overload. |
| Fertility Effects | No known effect on fertility at therapeutic doses. High-dose potassium may cause menstrual irregularities, but no direct reproductive toxicity. |
■ FDA Black Box Warning
Potassium chloride injections should be administered only in patients with normal renal function and in the presence of adequate urine flow, as hyperkalemia can occur and may be fatal.
| Serious Effects |
HyperkalemiaSevere renal failure with oliguria or anuriaAddison's diseaseUntreated hyperadrenalismAcute dehydrationSevere hemolytic reactionsConcurrent use of potassium-sparing diuretics (unless potassium monitoring is rigorous)
| Precautions | Use with caution in patients with cardiac disease, renal impairment, or conditions predisposing to hyperkalemia, Monitor serum potassium levels and ECG during administration, Do not use if solution is cloudy or contains precipitate, Dextrose solutions may cause hyperglycemia; use with caution in diabetes mellitus |
| Food/Dietary | Avoid high-potassium foods (e.g., bananas, oranges, tomatoes, potatoes, spinach, avocados) and salt substitutes containing potassium chloride, as they may increase hyperkalemia risk. |
| Clinical Pearls | Potassium chloride 30 mEq in dextrose 5% and lactated Ringer's is used for hypokalemia correction while providing maintenance fluids. Monitor serum potassium and cardiac rhythm during infusion, especially in renal impairment. Maximum infusion rate is 10 mEq/h for peripheral lines; higher rates require central line and cardiac monitoring. Do not administer undiluted; never give IV push. Contraindicated in hyperkalemia, severe renal failure, and untreated Addison's disease. |
| Patient Advice | This medication is given intravenously to treat or prevent low potassium levels. · Tell your healthcare provider if you have kidney disease, heart problems, or are taking certain medications like ACE inhibitors or potassium-sparing diuretics. · Report symptoms of high potassium such as muscle weakness, irregular heartbeat, or tingling sensations. · Do not consume potassium supplements, salt substitutes, or high-potassium foods without consulting your provider. |
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