Sodium Chloride 0.45% Injection

Category: Intravenous fluid / Electrolyte solution
Form: Sterile solution for intravenous (IV) infusion

Composition:

• Sodium chloride (NaCl) 0.45%) – provides a lower sodium and chloride concentration than normal saline.

• Water for injection as the solvent.

Uses:

• Fluid replacement in patients with mild sodium loss or dehydration.

• Maintenance of hydration when full-strength saline is not required.

• Can be used as a carrier for intravenous medications.

• Sometimes used in pediatric or geriatric patients who need mild sodium supplementation.

Mechanism of Action:

• Provides sodium and chloride ions to maintain extracellular fluid volume and osmotic balance.

• Hypotonic relative to plasma, allowing partial movement of water into intracellular spaces, helping restore total body water balance.

• Supports normal cellular function, muscle contraction, and nerve activity.

Administration:

• Administered intravenously, with infusion rate and volume adjusted according to patient’s age, weight, and clinical condition.

• Monitor vital signs, fluid status, and electrolytes during therapy.

Side Effects:

• Fluid overload, especially in patients with heart or kidney problems.

• Rare electrolyte disturbances if administered incorrectly.

• Local irritation or phlebitis at the injection site is uncommon.

Precautions:

• Use cautiously in patients with heart failure, renal impairment, or electrolyte imbalance.

• Monitor fluid balance and electrolytes during prolonged therapy.

• Avoid rapid infusion in patients at risk of overhydration.

Summary:
Sodium Chloride 0.45% Injection is a hypotonic intravenous fluid used for mild sodium replacement, hydration, and maintenance of fluid balance. It provides a lower sodium concentration than normal saline, making it suitable for patients who do not require full-strength saline. Administered intravenously, it requires monitoring of fluid status and electrolytes, particularly in patients with heart, kidney, or electrolyte-related conditions.