Fluid management considerations in extremely preterm infants born at 22-24 weeks of gestation

Area of Science:

• Neonatology
• Pediatric Nephrology
• Infant Physiology

Background:

• Extremely preterm infants have unique physiological challenges affecting fluid balance.
• Limited evidence exists for optimal parenteral fluid and electrolyte management in this population.
• Immature renal function and skin barriers impair homeostasis in preterm neonates.

Purpose of the Study:

• To highlight key developmental physiological properties of the preterm infant's kidney and skin.
• To provide evidence-based recommendations for initial parenteral fluid and electrolyte therapy.
• To guide providers in managing fluid and electrolyte balance in extremely premature infants.

Main Methods:

• Perspective paper synthesizing current literature.
• Review of developmental physiology of renal and skin barriers.
• Analysis of novel data and published studies on fluid and electrolyte management.

Main Results:

• Preterm infants' immature kidneys and skin significantly impact fluid and salt regulation.
• Understanding these physiological limitations is essential for appropriate fluid therapy.
• Current data suggest specific approaches to initial fluid and electrolyte administration.

Conclusions:

• Parenteral fluid therapy for extremely preterm infants requires careful consideration of renal and skin immaturity.
• Evidence-based recommendations can optimize fluid and electrolyte management.
• Further research is needed to refine optimal strategies for this population.