Objective: To study the impact of transpyloric (TP) feed initiation on short-term oxygenation and manual oxygen blender titration among extremely low birth weight infants.
Study Design: This retrospective study evaluated several measures of oxygenation among extremely low birth weight infants receiving positive pressure respiratory support for 96 hours before and after TP tube placement in a single neonatal intensive care unit during the years 2017- 2020. The measures included the achieved oxygen saturation (SpO), the baseline fraction of inspired oxygen (FiO), the SpO/FiO ratio, the number and severity of hypoxemic episodes and the frequency of manual oxygen titrations (titration index) and were analyzed using an interrupted time series regression approach.
Results: A total of 56 infants were evaluated. No significant differences were observed in any oxygenation measures during TP vs gastric feeding among 14 intubated infants. However, among 42 nonintubated patients, significant improvements were observed in the median SpO/FiO ratios (P = .001), median titration index (P = .05), median number of hypoxemic episodes (P = .02), and median severity of hypoxemic episodes (P = .008) after TP tube placement.
Conclusions: The transition from gastric to TP tube feeding was temporally associated with acute improvement in oxygenation for nonintubated infants, but not for intubated infants.
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