POTASSIUM CHLORIDE 20MEQ IN DEXTROSE 5% AND LACTATED RINGER'S IN PLASTIC CONTAINER
Clinical safety rating: caution
Comprehensive clinical and safety monograph for POTASSIUM CHLORIDE 20MEQ IN DEXTROSE 5% AND LACTATED RINGER'S IN PLASTIC CONTAINER (POTASSIUM CHLORIDE 20MEQ IN DEXTROSE 5% AND LACTATED RINGER'S IN PLASTIC CONTAINER).
Potassium is the major intracellular cation; it is essential for maintenance of intracellular tonicity, transmission of nerve impulses, contraction of cardiac, skeletal, and smooth muscle, and maintenance of normal renal function. Dextrose is a monosaccharide that provides caloric support. Lactated Ringer's solution contains sodium, chloride, potassium, calcium, and lactate in a balanced electrolyte solution; lactate is metabolized to bicarbonate in the liver, providing an alkalinizing effect.
| Metabolism | Potassium is not metabolized; it is excreted primarily by the kidneys. Dextrose is metabolized via glycolysis and the citric acid cycle. Lactate is converted to glucose via gluconeogenesis or oxidized to carbon dioxide and water. |
| Excretion | Primarily renal (>90% excreted unchanged by kidneys); minimal fecal/biliary elimination (<5%) |
| Half-life | Not applicable (endogenous ion with tight homeostatic regulation; administered potassium is rapidly distributed and eliminated, half-life of distribution ~1-2 hours, but terminal elimination depends on renal function and body stores) |
| Protein binding | Negligible (<5%) |
| Volume of Distribution | 0.14-0.2 L/kg (primarily intracellular distribution; total body water) |
| Bioavailability | Oral: 100% (as potassium salt, but absorption may be limited by gastrointestinal factors; intravenous: 100% |
| Onset of Action | Intravenous: within minutes (immediate effect on serum potassium); oral: 30-60 minutes |
| Duration of Action | Intravenous: 2-4 hours (duration of effect on serum potassium followed by redistribution); prolonged with continuous infusion |
Potassium chloride 20 mEq in dextrose 5% and lactated Ringer's solution, intravenous infusion over at least 1 hour, typically given as 20 mEq per dose, administered no faster than 10 mEq/h. Frequency depends on serum potassium levels, typically every 4-6 hours.
| Dosage form | INJECTABLE |
| Renal impairment | For GFR 30-50 mL/min: reduce dose by 50% or extend interval. For GFR <30 mL/min: contraindicated or use with extreme caution, maximum dose 20 mEq per day. |
| Liver impairment | Child-Pugh class A: no adjustment required. Child-Pugh class B or C: reduce dose by 50% and monitor serum potassium closely due to risk of hyperkalemia. |
| Pediatric use | Dose: 0.5-1 mEq/kg/dose, IV infusion at a rate not exceeding 0.5 mEq/kg/h. Maximum single dose: 20 mEq. Frequency based on serum potassium deficits. |
| Geriatric use | Start at lower end of dosing range (e.g., 10 mEq per dose) due to decreased renal function. Infusion rate not to exceed 10 mEq/h. Monitor renal function and serum potassium frequently. |
| 1st trimester | Consult provider |
| 2nd trimester | Consult provider |
| 3rd trimester | Consult provider |
Clinical note
Comprehensive clinical and safety monograph for POTASSIUM CHLORIDE 20MEQ IN DEXTROSE 5% AND LACTATED RINGER'S IN PLASTIC CONTAINER (POTASSIUM CHLORIDE 20MEQ IN DEXTROSE 5% AND LACTATED RINGER'S IN PLASTIC CONTAINER).
| Breastfeeding | Potassium chloride is a normal component of breast milk. Supplemental potassium from this solution is unlikely to affect the infant significantly. M/P ratio is not reported and not clinically relevant due to endogenous regulation. |
| Teratogenic Risk | Potassium chloride is a physiological electrolyte. No teratogenic effects are expected based on mechanism and clinical data. Use during pregnancy is considered safe when clinically indicated. |
■ FDA Black Box Warning
Concentrated potassium solutions must be diluted before administration. Rapid infusion of potassium may cause fatal hyperkalemia.
| Serious Effects |
["Hyperkalemia","Severe renal failure with oliguria or anuria","Hypersensitivity to any component","Addison's disease","Acute dehydration","Severe metabolic acidosis"]
| Precautions | ["Use with caution in patients with renal impairment, heart disease, or conditions predisposing to hyperkalemia","Monitor serum potassium levels frequently during therapy","Avoid rapid infusion; may cause hyperkalemia and cardiac arrhythmias","Use with caution in patients with metabolic alkalosis or hyperlactatemia"] |
Loading safety data…
| Fetal Monitoring | Monitor maternal serum potassium, glucose, and electrolyte levels. Fetal heart rate monitoring is not routinely required but may be indicated if maternal electrolyte disturbances occur. |
| Fertility Effects | No known adverse effects on fertility. Potassium chloride is not associated with reproductive toxicity in animal or human studies. |