Natriumbikarbonat, Viaflo Baxter (Sodium Hydrogen Carbonate)

Natriumbikarbonat, Viaflo Baxter is used to manage conditions involving disturbed acid‑base balance.

• Metabolic acidosis: restores normal plasma pH by providing bicarbonate ions.
• Acid‑base disorders: corrects systemic acidity in renal or respiratory failure.
• Hyperkalemia (adjunct therapy): facilitates intracellular shift of potassium while correcting acidosis.
• Urinary alkalinization: raises urinary pH to enhance excretion of certain drugs or toxins.

• Sodium hydrogen carbonate dissociates to release bicarbonate ions that combine with excess hydrogen ions, forming carbonic acid which is rapidly converted to CO₂ and water. This buffering action raises blood pH, counteracting metabolic acidosis and stabilizing the acid‑base environment. The increased bicarbonate also promotes potassium shift into cells, aiding in hyperkalemia management.

Adverse reactions may occur with intravenous sodium bicarbonate administration.

Common Side Effects

• Mild metabolic alkalosis: over‑correction of pH.
• Hypernatremia: elevated serum sodium levels.
• Local irritation: pain or erythema at the infusion site.
• Fluid overload: especially in patients with compromised cardiac function.

Serious or Rare Side Effects

• Severe alkalosis: can lead to neuromuscular irritability.
• Cardiac arrhythmias: due to electrolyte shifts.
• Pulmonary edema: from rapid volume expansion.
• Hypocalcemia: secondary to increased pH.
• Anaphylactoid reactions: rare hypersensitivity to the solution.

When using Natriumbikarbonat, consider the following safety measures.

• Monitor electrolytes: check serum sodium, potassium, and bicarbonate levels regularly.
• Assess acid‑base status: avoid over‑correction by frequent blood gas analysis.
• Cardiac function: use cautiously in patients with heart failure or hypertension.
• Volume status: limit infusion rates in patients at risk of fluid overload.
• Compatibility: ensure solution compatibility with other IV drugs before co‑administration.
• Store at 2-8°C: keep refrigerated, protect from light, do not freeze or shake.

Sodium bicarbonate can affect the pharmacokinetics of several medicines.

Major Interactions (Avoid)

• Calcium channel blockers: may reduce antihypertensive effect.
• Certain antibiotics (e.g., tetracyclines, fluoroquinolones): decreased absorption due to increased gastric pH.

Moderate Interactions (Monitor Closely)

• Digoxin: altered serum levels from electrolyte shifts.
• Lithium: risk of toxicity from reduced renal clearance.
• NSAIDs: potential for reduced renal perfusion when combined with volume expansion.
• Warfarin: possible alteration of INR values.
• Antacids: additive alkalinizing effect may lead to metabolic alkalosis.