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Published on: August 9, 2012
A balancing act: drifting away from the reflexive use of "ab"normal saline
Linda Wang1, Celeste Dixon2, Jennifer Nhan3
1Department of Pediatrics, Division of Nephrology, Children's National Hospital, Washington, DC, USA. lwang4@childrensnational.org.
Insights
Pediatric patients receiving 0.9% saline for maintenance intravenous fluids may experience adverse effects like metabolic acidosis. Balanced solutions are recommended for safer fluid therapy in children.
Area of Science:
- Pediatric Medicine
- Clinical Pharmacology
- Nephrology
Background:
- Maintenance intravenous fluids are common in hospitalized children.
- National guidelines led to increased use of isotonic solutions, particularly 0.9% saline, to prevent hyponatremia.
- The use of 0.9% saline may have unintended consequences.
Purpose of the Study:
- To review the potential adverse effects of 0.9% saline in pediatric patients.
- To compare the safety and efficacy of balanced solutions versus 0.9% saline.
- To emphasize individualized fluid therapy in children.
Main Methods:
- Educational review of existing literature.
- Analysis of studies comparing saline and balanced solutions.
- Discussion of physiological effects of different intravenous fluids.
Main Results:
- 0.9% saline can lead to hyperchloremia, metabolic acidosis, acute kidney injury, and hyperkalemia.
- Balanced solutions with anion buffers generally cause less harm in pediatric patients.
- Evidence comparing fluid choices is variable, but benefits of balanced solutions are highlighted.
Conclusions:
- Balanced solutions may be preferable to 0.9% saline for maintenance intravenous fluids in children.
- Individualized patient assessment is crucial for optimal fluid therapy.
- Avoiding potential harms associated with 0.9% saline is important in pediatric care.
Abstract:
Maintenance intravenous fluids are the most frequently ordered medications for hospitalized children. Since the American Association of Pediatrics published national guidelines, there has been an increased reflexive use of isotonic solutions, especially 0.9% saline, as a prophylaxis against hyponatremia. In this educational review, we discuss the potential deleterious effects of using 0.9% saline, including the development of hyperchloremia, metabolic acidosis, acute kidney injury, hyperkalemia, and a proinflammatory state. Balanced solutions with anion buffers cause relatively minimal harm when used in most children. While the literature supporting one fluid choice over the other is variable, we highlight the benefits of balanced solutions over saline and the importance of prescribing fluid therapy that is individualized for each patient.
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