Dilemmas in establishing preterm enteral feeding: where do we start and how fast do we go?

Area of Science:

• Neonatology
• Pediatric Gastroenterology
• Nutritional Science

Background:

• Preterm infants, especially very low birth weight (VLBW) infants, face unique challenges as their gastrointestinal (GI) tract must develop postnatally while assuming the role of nutrient absorption.
• The transition from placental nutrition to enteral feeding requires the preterm gut to mature rapidly, increasing the risk of GI complications such as dysmotility and necrotizing enterocolitis (NEC).
• Delayed or complicated enteral feeding can necessitate prolonged parenteral nutrition (PN), increasing risks of central line-associated bloodstream infection (CLABSI) and PN-associated liver disease (PNALD).

Purpose of the Study:

• To provide an overview of current approaches and supporting data for initiating and advancing enteral feeds in preterm and VLBW infants.
• To discuss the significant knowledge gaps and dilemmas associated with preterm feeding initiation and advancement.
• To identify areas for future research to optimize nutritional support for VLBW infants.

Main Methods:

• This is a perspective piece, synthesizing existing literature and clinical experience.
• It reviews current strategies for starting and advancing enteral nutrition in preterm infants.
• It highlights challenges and identifies areas requiring further investigation.

Main Results:

• Current approaches to enteral feeding in preterm infants are balanced by the risk of GI complications and the potential need for prolonged parenteral nutrition.
• Significant gaps in knowledge exist regarding the optimal methods for initiating and advancing enteral feeds to meet the nutritional and fluid requirements of VLBW infants.
• The review frames the complexities of preterm feeding and points to opportunities for future research.

Conclusions:

• Optimizing the initiation and advancement of enteral nutrition is critical for preterm and VLBW infants to support growth and development while minimizing complications.
• Further research is needed to address the current knowledge gaps and refine feeding strategies, balancing the benefits of enteral nutrition with the risks of GI immaturity.
• A comprehensive understanding of preterm infant physiology and feeding tolerance is essential for improving clinical outcomes.