Please check your internet connection and try again.
# Fluids in Pediatrics
## Overview
Fluid therapy in pediatrics involves isotonic crystalloids (e.g., 0.9% Normal Saline, Lactated Ringer’s, or Plasma-Lyte) for resuscitation and maintenance. Balanced crystalloids (Lactated Ringer’s or Plasma-Lyte) are increasingly preferred over 0.9% Normal Saline to reduce the risk of hyperchloremic metabolic acidosis.
## Primary Indications
* **Resuscitation:** Hypovolemic shock, sepsis, severe dehydration, and trauma.
* **Maintenance:** Hydration for patients unable to tolerate enteral intake.
* **Correction:** Electrolyte disturbances and fluid loss replacement.
## Adult Dosing
*Not applicable.* Refer to pediatric-specific guidelines or institutional weight-based protocols.
## Pediatric Dosing
### Resuscitation
* **Standard dose:** 20 mL/kg of an isotonic crystalloid administered as a rapid bolus.
* **Caveats:** In septic shock or DKA, current guidelines (e.g., Surviving Sepsis, ISPAD) often recommend smaller, more frequent boluses (e.g., 10 mL/kg) and frequent reassessment to avoid fluid overload.
### Maintenance Fluids (Holliday-Segar Method)
* **0–10 kg:** 100 mL/kg/day.
* **11–20 kg:** 1,000 mL + 50 mL/kg for every kg over 10 kg.
* **>20 kg:** 1,500 mL + 20 mL/kg for every kg over 20 kg (Max 2,400 mL/day).
* **Note:** Use "isotonic" maintenance (e.g., 0.9% NaCl with D5 or D5-0.45% NaCl depending on blood glucose/age) to prevent hospital-acquired hyponatremia.
## Dose Adjustments
* **Renal/Cardiac Impairment:** Reduce volume and rate significantly; monitor for signs of fluid overload (edema, crackles, S3 gallop, hypertension).
* **Dehydration severity:** Add fluid deficit replacement to maintenance requirements based on percent dehydration.
## Contraindications
* **Fluid overload:** Severe congestive heart failure, pulmonary edema.
* **Specific Fluid choice:** Certain colloids (e.g., albumin) may be contraindicated in specific pediatric populations depending on underlying pathology (e.g., traumatic brain injury).
## Adverse Effects
* **Fluid overload/Volume expansion:** Peripheral edema, pulmonary edema, hypertension, heart failure.
* **Electrolyte imbalances:** Hyperchloremic metabolic acidosis (common with excessive 0.9% NaCl), hyponatremia (if hypotonic fluids are used incorrectly).
## Key Drug Interactions
* **Calcium-containing solutions:** Incompatible with certain medications (e.g., ceftriaxone) due to precipitate formation in IV lines.
* **Drug compatibility:** Always verify Y-site compatibility before co-infusing medications with maintenance fluids.
## Monitoring
* **Clinical:** Daily weights (most sensitive marker), heart rate, respiratory rate, blood pressure, capillary refill, and mucous membranes.
* **Laboratory:** Serum electrolytes (Na, K, Cl), pH, CO2, and output (Target 1–2 mL/kg/hr for infants; 0.5–1 mL/kg/hr for older children).
## Clinical Pearls
* **Isotonic Preference:** Avoid using hypotonic maintenance fluids (e.g., 0.2% NaCl) in hospitalized children as they carry a high risk of iatrogenic hyponatremia, especially in the presence of ADH secretion (stress, pain, nausea).
* **Local Protocols:** Fluids must always be prescribed according to the *specific institutional clinical practice guidelines*, particularly regarding the use of additives (potassium, chloride, glucose).
* **Sepsis:** Fluid boluses should be titrated to clinical response, not just volume, to prevent fluid-associated myocardial dysfunction.
***
**Educational Disclaimer:** This information is for educational purposes and does not substitute for clinical judgment. Institutional protocols vary significantly. Always verify doses, fluid selection, and contraindications against currently approved institutional guidelines and the product monograph before prescribing or administering.
