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- W2115234405 abstract "Abstract Background Poor feeding is a common cause of prolonged hospitalization of preterm infants. Pharyngeal and upper esophageal sphincter (UES) function of preterm infants has been technically difficult to assess and is therefore poorly characterized. The aim of this study was to assess the development of pharyngeal motility, UES function, and their coordination during nutritive swallowing in preterm infants. Methods Development of swallowing was assessed in 18 preterm infants. High resolution manometry was performed at first oral feeding attempt (31–32 week) and then weekly for 4 weeks. Pharyngeal and UES pressure changes were characterized in 980 swallows. Key Results During swallowing, we observed an age‐related increase in peak pharyngeal pressure at the laryngeal inlet (1 cm above UES) but an age‐related decrease in the time required for the UES to fully relax to nadir. Analysis of the timing of proximal pharyngeal contractile peak and UES nadir showed that the UES was not fully relaxed when bolus propulsive forces were at their peak in the youngest infants. Conclusions & Inferences Results show developmental changes in infant swallow physiology that can be clearly linked to the effectiveness of nutritive swallowing. Most preterm infants demonstrated poor pharyngeal pressures at the laryngeal inlet coupled with poor coordination of pharyngeal propulsion with UES relaxation. These pressure patterns were less efficient than those demonstrated by older infants who were more adept at feeding. These observations may explain why infants under 34 weeks are physiologically unable to feed effectively and experience frequent choking and fatigue during feeding." @default.
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- W2115234405 date "2011-08-09" @default.
- W2115234405 modified "2023-10-16" @default.
- W2115234405 title "Development of pharyngo-esophageal physiology during swallowing in the preterm infant" @default.
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- W2115234405 doi "https://doi.org/10.1111/j.1365-2982.2011.01763.x" @default.
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