Abstract
Objective
Updated neonatal resuscitation guidelines for free-flow oxygen administration with a T-piece resuscitator recommend higher gas flow and an open T-piece cap. We aimed to determine the effect of gas inflow rate and cap occlusion on oxygen delivery through a T-piece resuscitator.
Study design
Using a NeoPuff™ T-piece, oxygen inflow was randomly adjusted from 4 to 10 liters per minute (LPM). Gas outflow and oxygen concentration were measured with the T-piece cap open and occluded. Data were analyzed with repeated measures 2-way ANOVA.
Result
Gas outflow was significantly decreased with the T-piece cap open compared with occluded at each inflow rate (p < 0.001). There was no difference in oxygen concentration of the outflow gas.
Conclusion
Gas flow from the T-piece is affected by the inflow rate and cap occlusion but oxygen concentration is not. To deliver 5 LPM of free-flow oxygen with the cap open, a minimum of 8 LPM gas inflow is required.
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Acknowledgements
We would like to thank Tony Iannetta, RRT for his assistance with set up of the testing devices.
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Ellsworth, L., Meerkov, M., Doglioni, N. et al. Oxygen supplementation in the delivery room: T-piece resuscitator cap open or occluded?. J Perinatol 39, 1078–1080 (2019). https://doi.org/10.1038/s41372-019-0406-x
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DOI: https://doi.org/10.1038/s41372-019-0406-x