Risks of severe hyponatremia in children receiving hypotonic fluids

Area of Science:

• Pediatric critical care medicine
• Clinical pharmacology
• Nephrology

Background:

• Hypotonic intravenous fluids have been a long-standing standard in pediatric care, often containing insufficient sodium.
• Hyponatremia (low blood sodium) is a significant risk in hospitalized children, exacerbated by conditions like SIADH (syndrome of inappropriate secretion of antidiuretic hormone).
• Severe hyponatremia can lead to serious neurological complications, including death.

Purpose of the Study:

• To review the evidence regarding the use of hypotonic versus isotonic intravenous fluids in children.
• To highlight the risks of hyponatremia associated with hypotonic fluid administration.
• To advocate for updated national guidelines on safe intravenous fluid administration in pediatric patients.

Main Methods:

• Review of existing literature and randomized clinical trials comparing fluid types.
• Analysis of intravenous fluid orders from a major French hospital pharmacy (AP-HP) to assess current practices.

Main Results:

• Randomized trials indicate isotonic fluids are superior to hypotonic solutions in preventing hyponatremia in children.
• Despite evidence, clinical practice in France has shown limited change, with continued reliance on hypotonic fluids.

Conclusions:

• There is a need to update clinical practices regarding intravenous fluid administration in pediatric care.
• National guidelines are recommended to promote the use of safer, isotonic fluids for children.
• Further education and policy changes are necessary to align practice with evidence-based recommendations for preventing pediatric hyponatremia.