Please check your internet connection and try again.
# Normal Saline (0.9% Sodium Chloride)
## Overview
Normal saline is an isotonic crystalloid intravenous fluid used for hydration and electrolyte replenishment.
## Primary Indications
* Volume resuscitation in hypovolemia and shock.
* Maintenance fluid therapy.
* Diluent for medications.
* Treatment of hyponatremia (with caution).
* Wound irrigation.
## Adult Dosing
Dosing is highly individualized based on clinical indication, patient status, and response.
* **Resuscitation:** Typically initiated as a bolus of 250-1000 mL, repeated as needed. Maximum bolus dose is often based on local protocol but can be up to 30 mL/kg for severe hypovolemia/shock.
* **Maintenance:** Typically 1-2 L per 24 hours, adjusted for fluid losses and renal/cardiac function.
## Pediatric Dosing
Dosing is highly individualized based on weight, clinical condition, and fluid losses.
* **Resuscitation:** 10-20 mL/kg bolus, repeated as needed.
* **Maintenance:** Typically 100 mL/kg/day for the first 10 kg, 50 mL/kg/day for the next 10 kg, and 20 mL/kg/day for remaining weight. Total daily volume should not exceed 2.5 L.
## Dose Adjustments
* **Renal Impairment:** Use with caution; fluid overload can occur.
* **Heart Failure:** Use with extreme caution due to risk of fluid overload.
## Contraindications
* Hypernatremia.
* Severe fluid overload states.
## Adverse Effects
* Fluid overload (edema, dyspnea, pulmonary edema, congestive heart failure).
* Hypernatremia (especially with large volumes or impaired renal excretion).
* Electrolyte imbalances (dilutional hyponatremia).
* Local irritation or phlebitis at infusion site.
## Key Drug Interactions
None significant with the intravenous fluid itself. However, the rate of administration of medications diluted in normal saline can affect their pharmacokinetics.
## Monitoring
* Vital signs (blood pressure, heart rate, respiratory rate).
* Urine output.
* Serum electrolytes (sodium, chloride).
* Fluid balance (intake and output).
* Signs of fluid overload (edema, lung sounds).
## Clinical Pearls
* While considered "neutral," large volumes can still lead to fluid overload and electrolyte disturbances.
* Monitor for signs of hyponatremia, especially in patients receiving large volumes over extended periods or with impaired excretion.
* Consider alternative solutions (e.g., Lactated Ringer's) for large volume resuscitation in certain patient populations (e.g., trauma, burns) to avoid hyperchloremic metabolic acidosis.
***
*Disclaimer: This information is intended for healthcare professionals. Always consult the most current prescribing information and institutional protocols for definitive guidance.*
