PICU Optimizing Fluid Therapy in Pediatric Patients with Failure to Thrive: Balancing Hydration and Electrolytes

Failure to thrive (FTT) in children is a common pediatric challenge with significant implications for growth, development, and overall health. Fluid therapy is an essential component of management, as hydration and electrolyte balance are closely linked to nutritional rehabilitation. Children with FTT may present with dehydration, poor oral intake, or metabolic instability, and their limited reserves make them particularly sensitive to both underhydration and fluid overload. Careful assessment of hydration status, weight trends, and serum electrolytes should guide therapy. Maintenance fluid requirements are best calculated using actual body weight, with ongoing adjustments for illness, fever, or gastrointestinal losses. Electrolyte supplementation, especially with potassium and phosphate, may be required and should be titrated carefully to avoid complications such as arrhythmias or refeeding syndrome. While intravenous fluids are necessary in acute care settings, oral or enteral routes should be prioritized whenever possible to support both hydration and caloric intake. Close monitoring of clinical status, urine output, and biochemical markers is essential to ensure safe and effective therapy. Ultimately, fluid management in FTT should not be considered in isolation but integrated into a comprehensive care plan that addresses nutrition, growth monitoring, and the underlying cause of poor weight gain. For general pediatricians, understanding the principles of fluid therapy in FTT is vital to supporting recovery and promoting long-term healthy development.