ISOLYTE S PH 7.4 IN PLASTIC CONTAINER
Clinical safety rating
cautionComprehensive clinical and safety monograph for ISOLYTE S PH 7.4 IN PLASTIC CONTAINER (ISOLYTE S PH 7.4 IN PLASTIC CONTAINER).
Isolyte S pH 7.4 is an isotonic crystalloid solution that expands intravascular volume and replaces extracellular fluid losses. It provides electrolytes (sodium, chloride, potassium, magnesium, acetate, gluconate) to maintain acid-base balance and osmotic pressure. Acetate and gluconate are metabolized to bicarbonate, providing alkalinizing effect.
| Metabolism | Acetate and gluconate are metabolized primarily in the liver and peripheral tissues to bicarbonate ions. Electrolytes are excreted or reabsorbed via renal mechanisms. |
| Excretion | Renal: 100% (electrolytes and buffer components are excreted unchanged by the kidneys; no biliary or fecal elimination). |
| Half-life | Not applicable (components are endogenous substances; half-life reflects renal clearance and volume status, typically 2-4 hours for sodium and chloride in euvolemic patients). |
| Protein binding | 0% (electrolytes and buffer components are not protein-bound; free in plasma). |
| Volume of Distribution | Sodium: 0.15-0.3 L/kg (extracellular fluid space); Chloride: similar; Bicarbonate precursor (acetate/gluconate): distributed in total body water (~0.6 L/kg). |
| Bioavailability | Intravenous: 100% (directly administered into bloodstream); not applicable to other routes. |
| Onset of Action | Intravenous: Immediate (within seconds to minutes) upon infusion; correction of electrolyte imbalances and acid-base status occurs proportional to infusion rate. |
| Duration of Action | Intravenous: Duration depends on infusion rate and renal function; effects last as long as infusion continues and for several hours post-infusion due to redistribution and renal elimination. |
| Molecular Weight | Not applicable (mixture of electrolytes; individual components have molecular weights such as sodium 23 Da, chloride 35.5 Da, etc.) |
Intravenous infusion; dose depends on fluid and electrolyte needs, typically 500-3000 mL/24 hours for adults.
| Dosage form | INJECTABLE |
| Renal impairment | No specific dosage adjustment; use with caution in severe renal impairment due to risk of electrolyte imbalances and fluid overload. |
| Liver impairment | No specific dosage adjustment; monitor for electrolyte disturbances and fluid overload. |
| Pediatric use | Weight-based: 100-150 mL/kg/24 hours for maintenance; adjust based on clinical condition and electrolyte requirements. |
| Geriatric use | Use with caution due to increased risk of fluid overload and electrolyte imbalances; start at lower end of dosing range and monitor closely. |
| 1st trimester | Generally considered safe for use when clinically indicated; isotonic crystalloid solution for fluid and electrolyte replacement. |
| 2nd trimester | Generally considered safe for use when clinically indicated; isotonic crystalloid solution for fluid and electrolyte replacement. |
| 3rd trimester | Generally considered safe for use when clinically indicated; isotonic crystalloid solution for fluid and electrolyte replacement. |
Clinical note
Comprehensive clinical and safety monograph for ISOLYTE S PH 7.4 IN PLASTIC CONTAINER (ISOLYTE S PH 7.4 IN PLASTIC CONTAINER).
| Placental transfer | Electrolytes and water readily cross the placenta; no specific fetal risk at therapeutic doses. |
| Breastfeeding | ISOLYTE S PH 7.4 is an isotonic crystalloid solution; components are normal physiological electrolytes and water, and are unlikely to cause adverse effects in the breastfed infant. Use only as clinically necessary. |
| Lactation Rating | Safe |
| Teratogenic Risk | Isolyte S pH 7.4 is a balanced electrolyte solution with no known teratogenic effects in humans. No fetal risks are identified in any trimester when used appropriately for fluid and electrolyte replacement. |
| Fetal Monitoring | Monitor maternal serum electrolytes, fluid balance, acid-base status, and renal function. Fetal heart rate monitoring is not specifically required unless maternal condition warrants it. |
| Fertility Effects | Isolyte S pH 7.4 has no known adverse effects on fertility. Reproductive toxicity studies are not indicated as it is a physiologic electrolyte solution. |
■ FDA Black Box Warning
No FDA black box warning.
| Serious Effects |
Clinically significant hypernatremiaClinically significant hyperchloremiaSevere metabolic alkalosisKnown hypersensitivity to any component
| Precautions | Use with caution in patients with congestive heart failure, severe renal impairment, hyponatremia, hyperkalemia, hypermagnesemia, or conditions predisposing to fluid overload., May cause fluid and/or solute overload, pulmonary edema, or electrolyte disturbances., Monitor serum electrolytes, fluid balance, and acid-base status during prolonged therapy. |
| Food/Dietary | No known food interactions. However, oral intake may be restricted or modified based on underlying condition (e.g., bowel rest, NPO status). |
| Clinical Pearls | ISOLYTE S pH 7.4 is a balanced isotonic crystalloid solution containing multiple electrolytes (sodium, potassium, magnesium, calcium, acetate, gluconate) and is buffered to pH 7.4. It is indicated for use as a replacement fluid in extracellular volume depletion (e.g., dehydration, burns, surgery) and for maintenance fluid therapy. Avoid use in patients with hyperkalemia, hypercalcemia, or severe metabolic alkalosis. The acetate and gluconate act as bicarbonate precursors, making it suitable for correcting mild metabolic acidosis. In patients with renal impairment, monitor electrolytes closely due to risk of accumulation. Do not confuse with ISOLYTE S without pH adjustment (which may have different buffer composition). |
| Patient Advice | This solution is given intravenously to replace lost fluids and electrolytes. · Tell your healthcare provider if you have kidney disease, heart disease, or any electrolyte imbalances. · Report any signs of fluid overload, such as shortness of breath, swelling in ankles or feet, or rapid weight gain. · Do not drive or operate heavy machinery until you know how this medication affects you. · Inform your doctor if you are pregnant, planning to become pregnant, or breastfeeding. · Keep all appointments for blood tests to monitor electrolyte levels. |
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