Influence of Gavage Tube Characteristics on Gastric Residuals in Preterm Infants
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Publisher:The Ohio State University
Series/Report no.:The Ohio State University. College of Nursing Honors Theses; 2012
The gastrointestinal tract of preterm infants is developmentally immature placing them at high risk for developing feeding intolerance and/or necrotizing enterocolitis (NEC). Enteral nutrition is provided by gavage tube until the suck-swallow mechanism matures. Standards of care include checking for gastric residuals via aspiration prior to each feeding in order to assess feeding tolerance. The presence of gastric residuals can be indicative of physiologic immaturity or the development of NEC. Thus assessing for the presence of gastric residuals is critical to providing safe care to preterm infants. It is important to identify factors that can impact accurate assessment of gastric residuals. The purpose of this study is to examine the influence of the material used to construct the gavage tube on gastric residual volume. This study used a comparative analysis to determine the influence of gavage tube properties on gastric residual volume. A laboratory setting was used to simulate gavage feeding in preterm infants. Polyurethane and silicone tubes in sizes 5Fr and 6.5Fr were compared. A feeding pump infused 15ml of human breast milk or formula through the tubes into a reservoir that contains a mixture of HCL with a pH of 3.0. Gastric residuals were recorded across ten trials for each feeding tube size, composition (polyurethane and silicone), and type of feeding (human breast milk preterm formula at preselected caloric densities). Comparative analysis resulted in significant differences between silicone vs. polyurethane tubes and formula vs. breast milk. When aspirated, polyurethane tubes and breast milk yielded more volumes than silicone and formula. Inaccurate assessment of gastric residuals might be occurring placing the preterm infant at greater risk for developing feeding intolerance and/or NEC.
Related Item:Academic Major: Nursing
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